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Overview of check valves series:
Thecheckvalveseriesproductsmainly includerubberplate checkvalve,flange checkvalve,flange silencing checkvalve,etc products of many specification.They are mainly used at the outlet of pipepumps of water supply and drainage system,chemical engineering departments to prevent reverse flow of medium.The products are simple in structure. The maintenance,repair and transportationareveryconvenient.
7 The internal structure of check valve
Seethefollowingtableformaterialsofmain partsofthecheckvalvesseriesproducts:
| ProductName | NameofMainParts | Materials |
| Rubberplate checkvalve | Valvebody | QT450-10 |
| Valveclack | QT450-10 | |
| Sealing ring | Nitrile rubber | |
| Flangecheckvalve | Valvebody | QT450-10 |
| Valve clack | QT450-10+bit copper | |
| O-ring | Nitrile rubber | |
| Flange silencing checkvalve | Valvebody | QT450-10 |
| Valve clack | QT450-10 | |
| Sealing ring | Nitrile rubber |
The adopted standardsofcheckvalves seriesproducts:
| Series | Adoptedstandards |
| Rubberplate checkvalve | Design and manufacturing standardGB/T 13932 |
| Structural lengthstandardGB/T12221 | |
| Pressure test standardGB/T 13927 | |
| Flange size standard GB/T 17241.6 | |
| Flange checkvalve | Design and manufacturing standard GB/T13932 |
| Structural lengthstandardGB/T12221 | |
| Pressure test standard GB/T 13927 | |
| Flange size standardGB/T17241.6 | |
| Flangesilencing checkvalve | Design and manufacturing standardGB/T 12233 |
| Structural lengthstandardGB/T12221 | |
| Pressure teststandard GB/T13927 | |
| Flange size standard GB/T 17241.6 |
Rubberplate checkvalves
| Features | Installation requirements | Applications | TechnicalParameters | ||
| 1. Mainly made up of valve body, sealing ring and valve clacks. Simple productstructure,convenientmaintenanceandrepair. | Horizontal (transverse) installation | Mainlyusedatthe pipepumpoutletof watersupplyand drainage system, petroleumand chemicalengineer- ingandother sectorstoprevent reverseofmedium. | Nominal pressure | 1.0MPa | 1.6MPa |
| 2.Thevalve clacksadoptinclined design.The shortclosing time can reducewaterhammerpressure. | Casing test | 1.5MPa | 2.4MPa | ||
| 3.Thevalveclacksaremadeofoilresistantnitrilerubberandsteel plate throughhigh temperature pressing and features washing-out resistance,good sealingperformance andreliablesealing. | Sealing test Work | 1.1MPa | 1.76MPa | ||
| 4.Thevalveclackscanopenandcloseautomaticallydependingon flowing of the medium toprevent reverse flow at the time ofpump stop. | temperature Applicable medium | ≤80℃ water | ≤80℃ water | ||
H44X-16Q (Product Code:3011）main external size and connection size
Unit: mm
Unit: mm
| DN | L | L1 | H | n-Od | Quantity (piece/case) | Remark |
| 50 | 203 | 125 | 160 | 4-19 | 4 | |
| 65 | 216 | 145 | 180 | 4-19 | 3 | |
| 80 | 240 | 160 | 200 | 8-19 | 2 | |
| 100 | 292 | 180 | 230 | 8-19 | 2 | |
| 125 | 330 | 210 | 255 | 8-19 | 1 | |
| 150 | 356 | 240 | 280 | 8-23 | 1 | |
| 200 | 495 | 295 | 340 | 12-23 | 1 |
H44X-10Q (Product Code:3012）main external size and connection size
Unit: mm
Unit: mm
| DN | L1 | H | pO-u | Quantity (piece/case) | Remark | |
| 50 | 200 | 125 | 165 | 4-19 | 4 | 1.0MPA |
| 65 | 215 | 145 | 185 | 4-19 | 3 | 1.0MPA |
| 80 | 240 | 160 | 200 | 8-19 | 2 | 1.0MPA |
| 100 | 290 | 180 | 220 | 8-19 | 2 | 1.0MPA |
| 125 | 330 | 210 | 250 | 8-19 | 1 | 1.0MPA |
| 150 | 355 | 240 | 285 | 8-23 | 1 | 1.0MPA |
| 200 | 500 | 295 | 340 | 8-23 | 1 | 1.0MPA |
Note: Please note that the product specification or quotation with “"on the page is new.
Flange check valves
| Features | Installation requirements | Applications | TechnicalParameters | ||
| 1.Adoptwearingparts washers and the filler adopts nitrile rubber, ensuring reliable sealing. 2.Thesealing surface ofvalve clackadopts copper alloybead weld andfeaturescorrosionresistanceand longservicelife. ing and closing. | Widelyused in the pipes of fluid or devicesofchemical engine-ering and firepowerplants to preventreverse flow of medium. | Nominal pressure | 1.0MPa | 1.6MPa | |
| 3.Thevalveclackisdesignedreasonablyandslidesalongthe perpendicular central line of thevalvebody and ensuresflexibleopen- | Casing test | 1.5MPa | 2.4MPa | ||
| Horizontal 4.Thevalveclackcanopenandcloseautomaticallydependingon (transverse) flowingof themedium topreventreverseflowof themedium. installation | Sealing test | 1.1MPa | 1.76MPa | ||
| 5. During the use process, the medium flows in the specified direction. When themedium flows inthe specified direction,the clackisopened duetoactionofforceofthemedium.Whenthemediumflowsin reversedirection,thesealingsurfacebetween thevalveclackand valveseatclosesduetoselfweightofthevalveclackandactionof reverse flow of the medium. | Work temperature | ≤80℃ | ≤80℃ | ||
| theoppositeforcesoastoachievethepurposeofpreventionof | Applicable medium | water | water | ||
| DN | L | D | pO-u | Quantity (piece/case) | Remark |
| 50 | 203 | 125 | 4-19 | 4 | |
| 65 | 216 | 145 | 4-19 | 3 | |
| 80 | 241 | 160 | 8-19 | 2 | |
| 100 | 292 | 180 | 8-19 | 2 | |
| 125 | 330 | 210 | 8-19 | 1 | |
| 150 | 356 | 240 | 8-23 | 1 | |
| 200 | 495 | 295 | 12-23 | 1 | |
| 250 | 622 | 355 | 12-28 | 1 | |
| 300 | 698 | 410 | 12-28 | 1 |
H44T-10Q (Product Code:3032)main external size and connection size
Unit: mm
Unit: mm
| DN | L | D | pO-u | Quantity (piece/case) | Remark |
| 50 | 203 | 125 | 4-19 | 4 | 1.0MPA |
| 65 | 216 | 145 | 4-19 | 3 | 1.0MPA |
| 80 | 241 | 160 | 8-19 | 2 | 1.0MPA |
| 100 | 292 | 180 | 8-19 | 2 | 1.0MPA |
| 125 | 330 | 210 | 8-19 | 1 | 1.0MPA |
| 150 | 356 | 240 | 8-23 | 1 | 1.0MPA |
| 200 | 495 | 295 | 8-23 | 1 | 1.0MPA |
| 250 | 622 | 350 | 12-23 | 1 | 1.0MPA |
| 300 | 698 | 400 | 12-23 | 1 | 1.0MPA |
Note: Please note that the product specification or quotation with “" on the page is new.
)Flange silencing check valves
| Features | Installation requirements | Applications | TechnicalParameters | ||
| 1.Valveclackisflexibletoopenandcloseandpositionsaccurately and canbeinstalledhorizontallyorvertically. | Installation | Nominal pressure | 1.0MPa | 1.6MPa | |
| Installatthepump outletofwater Casing test supplyanddrainage and firefighting to | 1.5MPa | 2.4MPa | |||
| 2. The valve clack is loaded with spring.Its quick closing canreduce requirements thewaterhammerpressureand thereisnonoisewhenclosing. Vertical preventdamageto installation pump caused by reverseflowof | Sealing test | 1.1MPa | 1.76MPa | ||
| returnedwater. 3.Smallfluidresistance,fatigueresistanceand longservicelife. | Work temperature | ≤80℃ | ≤80℃ | ||
| Applicable medium | water | water | |||
HX41X-16Q(Product Code:3041）main external size and connection size
Unit: mm
Unit: mm
| DN | L | D | pO-u | Quantity (piece/case) | Remark |
| 50 | 112 | 125 | 4-19 | 4 | |
| 65 | 134 | 145 | 4-19 | 3 | |
| 80 | 144 | 160 | 8-19 | 2 | |
| 100 | 170 | 180 | 8-19 | 2 | |
| 125 | 174 | 210 | 8-19 | 1 | |
| 150 | 185 | 240 | 8-23 | 1 | |
| 200 | 216 | 295 | 12-23 | 1 | |
| ★ 250 | 285 | 355 | 12-28 | 1 | |
| ★ 300 | 330 | 410 | 12-28 | 1 |
HX41X-10Q(Product Code:3042) mainexternalsizeandconnectionsize
Unit: mm
Unit: mm
| DN | L | D | n-Od | Quantity (piece/case) | Remark | |
| 50 | 112 | 125 | 4-19 | 4 | 1.0MPA | |
| 65 | 134 | 145 | 4-19 | 3 | 1.0MPA | |
| 80 | 144 | 160 | 8-19 | 2 | 1.0MPA | |
| 100 | 170 | 180 | 8-19 | 2 | 1.0MPA | |
| 150 | 185 | 240 | 8-23 | 1 | 1.0MPA | |
| 200 | 216 | 295 | 8-23 | 1 | 1.0MPA |
Note:Please note that the product specification orquotation with“”onthepage is new. Note: Please pay attention that the product mould marked with "\star" in the page is not perfect.
) Considerations for use and operation of check valveseriesproducts
| 1.Workprincipleandcharacteristics | 2.Storage,maintenance,installationanduse |
| 1.The checkvalve opens and closesvalve clackautomaticallydependingon theself flowingofthemediumtopreventreverseflow of the medium when stopping the pump. | 1.Store in dryand ventilated room;twoends of thevalvepassage should beblocked. |
| 2.Thevalvesforlong-term storage shouldbe inspectedregularly toremove the dirt.Pay attention tocleanlinessof the sealingsurfacetoprevent thedamageofsealingring. | |
| 2.The valve clacks adopt inclined design Shortclosingtimecanreducewaterhammer pressure. | 3.Checkthevalvemarkcarefullybeforeinstallationandseewhetheritcomplieswiththeuserequirements. |
| 4.Check thevalvepassage and sealing surfacebefore installation.If there is dirt,use the cleaning cloth towipe clean. | |
| 3.Thevalveclacksaremadeofoilresistant nitrilerubberandsteelplate throughhigh temperaturepressing and features wash- ing-outresistance,good sealing performance and reliablesealing. | 5.Payattention thatthe flowdirection markon thevalveshouldbeconsistentwith themediumflowdirectionbefore installation. |
| it is free from influence of pipe system. | |
| 7. During the use process, pay attention whether the valve has abnormal sound and vibration. In order to prevent gener- ationofwaterhammereffectinpipes,pay attentionto thepressure fluctuation ofmediumpressurein thepipes. |
3.Possible failure, reasons and troubleshooting
| Name of checkvalve | Possiblefailure | Reasons offailure | Troubleshooting |
| Rubberplate checkvalve | The leakage among the sealing surfaces. | 1. The sealing surface is adhered with dirt and sundries. | 1. Clean away the dirt and sundries. |
| 2. The sealing surface is damaged. | 2. Make repair again or replacement. | ||
| The leakage among the valve covers. | 1. The sealing ring is damaged. | 1. Replace the sealing ring. | |
| 2.The bolts on valve cover are not tightened. | 2.Tighten the loosened bolts. | ||
| Flange checkvalve | The clack cannot be opened or closed. | 1.The fitting between the rocker and pin roll is too tight or foreign matter blocks. | 1. Check the fit condition. |
| 2.There isforeignmatterblocking inside the valve. | 2.Remove the foreign matters. | ||
| Leakage at the connection of valve body and valve cover. | 1. The connecting bots are not tightened evenly. | 1. Tighten evenly. | |
| 2. The flange sealing surface is damaged. | 2.Make repair again. | ||
| 3. The O-ring is broken or failed. | 3. Replace the O-ring. | ||
| Large sound of the valve body with vibration. | 1. The installation position of the valve is too close to the pump. | 1.Install it to proper position again. | |
| 2. The pressure is not stable when the medium inside the pipe flows. | 2.Remove pressure fluctuation. | ||
| Flange silencing checkvalve | The leakage among the sealing surfaces. | 1. The sealing surface is adhered with dirt and sundries. | 1. Clean away the dirt and sundries. |
| 2. The sealing surface is damaged. | 2. Make repair again or replacement. | ||
| The valve clack cannot open and close automatically. | 1. The spring is failed. | 1.Replace the spring. | |
| 2. The spring is blocked by sundries. | 2. Clean the sundries. | ||
| 3.Sundries are adhered between the valve cover and valve clack. | 3. Clean the sundries. |
Flange filters
| 1Valvebody | 3Valvecover | 5Flatwasher | 7Spring washer |
| 2Filterscreen | 4 Sealing ring | 6 Spring washer |
Materialsof mainparts and components and adopted standards:
| Productname | Nameofmainparts | Materials | Technicalstandardforproduct manufacturingandacceptance |
| Flangefilter | Valvebody | QT450-10 | 结构长度标准GB/T12221 |
| Sealingring | 丁睛橡胶 | 压力试验标准GB/T13927 | |
| Filterscreen | 不锈钢 | 法兰尺寸标准GB/T17241.6 | |
| Valvecover | QT450-10 |
| Features | Applications | TechnicalParameters | ||
| 1.Simple andadvancedstructure,filterelementofwearingparts, adoption ofhigh strength304stainless steel.The waterpassage requirements. reliablesealingperformance. | Applicabletointerceptimpuritiesin thefluid in thepipelinetopurify waterqualityorprotectnormalwork ofotherequipmentinthesystem. | Thewater passagescreenis | 18-30meshes | 18-30meshes |
| Nominal pressure | 1.0MPa | 1.6MPa | ||
| blow down. 2.Setthemeshnumberofthe filterscreenaccording touser's | Casing test | 1.5MPa | 2.4MPa | |
| Sealing test | 1.1MPa | 1.76MPa | ||
| 3.Corrosionresistant;thesealingringadoptsnitrilerubber,providing | Worktemperature | ≤80℃ | ≤80℃ | |
| Applicablemedium | Water | Water | ||
GL41-16Q (Product Code:5011）main external size and connection size
| DN | L | D1 | n-Od | Quantity (piece/case) | Remark |
| 50 | 230 | 125 | 4-19 | 3 | |
| 65 | 280 | 145 | 4-19 | 2 | |
| 80 | 310 | 160 | 8-19 | 2 | |
| 100 | 350 | 180 | 8-19 | 1 | |
| 125 | 381 | 210 | 8-19 | 1 | |
| 150 | 450 | 240 | 8-23 | 1 | |
| 200 | 550 | 295 | 12-23 | 1 |
Unit: mm
| DN | L | D | n-Od | Quantity (piece/case) | Remark | |
| 50 | 230 | 125 | 4-19 | 3 | 1.0MPA | |
| 65 | 280 | 145 | 4-19 | 2 | 1.0MPA | |
| 80 | 310 | 160 | 8-19 | 2 | 1.0MPA | |
| 100 | 350 | 180 | 8-19 | 1 | 1.0MPA | |
| 125 | 381 | 210 | 8-19 | 1 | 1.0MPA | |
| 150 | 450 | 240 | 8-23 | 1 | 1.0MPA | |
| 200 | 550 | 295 | 8-23 | 1 | 1.0MPA |
Note: Please note that the product specification or quotation with “”on the page is new.
GL41-16Q Il (Product Code:5013) main external size and connection size
Unit: mm
Unit: mm
| DN | L | D1 | pO-u | Quantity (piece/case) | Remark |
| 50 | 203 | 125 | 4-19 | 3 | |
| 65 | 241 | 145 | 4-19 | 2 | |
| 80 | 283 | 160 | 8-19 | 2 | |
| 100 | 305 | 180 | 8-19 | 1 | |
| 125 | 356 | 210 | 8-19 | 1 | |
| 150 | 406 | 240 | 8-23 | 1 | |
| 200 | 457 | 295 | 12-23 | 1 |
⊚ Y pull rod telescopic filters
Materialsof mainparts andcomponentsand adoptedstandards:
| ProductName | NameofMainParts | Materials | Technicalstandardforproduct manufacturingandacceptance |
| Ypullrodtelescopicfilters | Valvebody | QT450-10 | Structural lengthstandardGB/T12221 |
| Valvecover | QT450-10 | PressureteststandardGB/T13927 | |
| Filterscreen | Stainless steel | FlangesizestandardGB/T17241.6 | |
| Sealing ring | Nitrile rubber | ||
| Sealingwasher | Nitrile rubber | ||
| Flat inserts | QT450-10 | ||
| Flange | QT450-10 | ||
| Telescopicscrew | Galvanized screw |
| Features | Applications | TechnicalParameters | ||
| 1.Simpleandadvancedstructure，filterelementofwearingparts, adoption ofhighstrength304stainlesssteel.Thewaterpassage screenis18-30meshes,smalldischargeresistance and convenient blow down. 3.Corrosionresistant;thesealingring adoptsnitrilerubber,providing reliablesealingperformance. | 1.Simpleandadvancedstructure, filterelementofwearingparts, adoptionofhighstrength304 stainless steel.The waterpassage | The water passagescreenis | 18-30meshes | 18-30meshes |
| Nominal pressure | 1.0MPa | 1.6MPa | ||
| 2.Customize thefilterscreen according touser'srequirements screenis18-30meshes,small dischargeresistanceandconve- nientblow down. | Casing test | 1.5MPa | 2.4MPa | |
| Sealing test | 1.1MPa | 1.76MPa | ||
| Worktemperature | ≤80℃ | ≤80℃ | ||
| Applicablemedium | Water | Water | ||
| 1.Considerationforoperation | 2.Storage,maintenance,installationanduse |
| Install theY pull rod telescopic filter on thepipelinedirectly.Specialattention should be paid to the installation direc- tion during the installation process. The direction indicated by the arrow on the valve body is flow direction of the medium. The installation length of theproduct does notexceed the maximum value. | 1. The filters should be stored in dry and ventilated room; two ends of the filter passage should be blocked. |
| 3. Check whether the mark onY pull rod telescopic filter complies with the use requirements carefully before installation. | |
| 4.Check theinnercavityof thefilterbefore installation,thefilterelement inparticular andseewhetherit is intact.If there is some damage, it should be repaired or replaced.If there is some dirt, use clean cloth to wipe clean. | |
| 5.Checkwhether the bolts on the valve cover is tightened before installation to ensure the sealing performance of the sealing ring. | |
| 6.During theinstallationprocess,ensure that the directionindicated by the arrow is consistent withflow direction of the medium. | |
| 7.During the installation process,ensure that the installation length ofYfilter does notexceed themaximumvalue. | |
| 8. Regular inspection should be made during the use process and check whether the filter element is adhered with damage to the filter element. If it is damaged or failed, make repair or replacement in time. The flow in the pipe should | |
| be intercepted at the time of inspection. Regular inspection should be also made after use. Check the damage condition of the sealing ring and filter element. If it isdamaged orfailed,makerepairandreplacement in time. |
3.Possible failure, reasons and troubleshooting
| Possiblefailure | Reasonsoffailure | Troubleshooting |
| Leakageattheconnectionbetween thevalvebodyandthevalvecover | The valve body is not pressed tightly. | Tighten the bolt evenly and press the sealing washer tightly. |
| The sealing washer becomes failed due to long-term use or improper storage. | Replace the sealing washer. | |
| The sealing surface is adhered with dirt and sundries. | Remove the dirt and sundries. | |
| The sealing surface is damaged. | Make machining again torepair orreplace. | |
| Leakageattheconnectionbetween thevalvebodyand theflatinserts | The flange is not pressed tightly. | Tighten the bolt evenly and press the sealing ring tightly. |
| The sealing ring becomes failed due to long-term use or improper storage. | Replace the sealing ring. | |
| The sealing surface is adhered with dirt and sundries. | Remove the dirt and sundries. | |
| The sealing surface is damaged. | Make machining again torepair orreplace. | |
| The flat inserts exceeds the maximumlength. | Insert flat pillar toproper scope in the direction of valvebody. | |
| The filter is clogged. | Thefilterelement isadheredwithagreatdeal of dirt and sundries. | Remove the dirt and sundries. |
| Thefiltercannotfiltermedium. | The filter element is damaged. | Replace the filter element. |
SGL41-16Q (Product Code:5021） main external size and connection size
| DN | D1 | Lmin | Lmax | pO-u | Quantity (piece/case) | Remark |
| 50 | 125 | 276 | 302 | 4-19 | 2 | |
| 65 | 145 | 316 | 343 | 4-19 | 1 | |
| 80 | 160 | 356 | 385 | 8-19 | 1 | |
| 100 | 180 | 405 | 429 | 8-19 | 1 | |
| 125 | 210 | 450 | 499 | 8-19 | 1 | |
| 150 | 240 | 500 | 559 | 8-23 | 1 | |
| 200 | 295 | 592 | 655 | 12-23 | 1 |
SGL41-10Q(Product Code:5022)main external size and connection size
| DN | D1 | Lmin | Lmax | n-Od | Quantity (piece/case) | Remark |
| 50 | 125 | 276 | 302 | 4-19 | 2 | 1.0MPA |
| 65 | 145 | 316 | 343 | 4-19 | 1 | 1.0MPA |
| 80 | 160 | 356 | 385 | 8-19 | 1 | 1.0MPA |
| 100 | 180 | 405 | 429 | 8-19 | 1 | 1.0MPA |
| 125 | 210 | 450 | 499 | 8-19 | 1 | 1.0MPA |
| 150 | 240 | 500 | 559 | 8-23 | 1 | 1.0MPA |
| 200 | 295 | 592 | 655 | 8-23 | 1 | 1.0MPA |
PrecautionsforOperationandUseofFilterSeriesProducts
| 1.OperatingMethod | 2.Storage,Maintenance,InstallationandUse |
| Directlyinstall theflangefilterat theinterfaceofthepipeline. During installation,special attentionshouldbepaidtoflow direction.Thearrowonthe valvebodyindicatestheflow directionofthemedium. | 1. The filter should be stored in a dry, ventilated room, with both ends of the filter channel blocked off. |
| 2.Filters in long-term storage should be regularly checked to remove dirt. | |
| 3.Before installation,carefully check whether the filter mark is consistent with the usage requirements. | |
| 4.Before installation,check the inner cavity of thefilter,especially the filterelement,forintactness.If it is damaged,it should be repaired or replaced. | |
| 5.Before installation,checkwhether thebolts on thevalve coverare tightened toensure the effectiveness of the sealing ring. | |
| 6.During installation,ensure that thedirection indicated by the arrowof thevalvebodyisconsistentwith theflowdirec- tion of the medium. | |
| 7.During use,check the filter regularly for dirt and impurities attached to the filter element;remove any dirt or impurities to prevent blockage or damage to the filter element. If the element is damaged or ineffective,repair or replace it imme diately.The pipeline should be cut off during inspection. | |
| 8.After use,it is alsonecessary to check the filterregularly for damage to the seal ring,filter element,and othercom- ponents. In case of damage or reduced performance,repair or replace them immediately. |
3.PossibleFaults,CausesandEliminationMethods
| PossibleFaults | CausesofFaults | EliminationMethods |
| Theconnectionbetweenthevalve bodyand thecoverisleaking. | 1.The valve cover is not tightlypressed.down. | 1.Tighten theboltevenlyandpress thesealing ring tightly. |
| 2.The sealing ring fails due to an extended time of use orimproper storage. | 2.Replace the sealing ring. | |
| 3.Thesealing surfaceiscontaminated withdirtor otherimpurities. | 3.Remove any dirt orimpuritiespresent. | |
| 4. The sealing surface is damaged. | 4.Rework or replace the sealing surface. | |
| Thefilterisblocked，orthefilter cannotfilterthemedium. | 1.There isa large amount of dirt orotherimpurities in thefilterelement. | 1.Remove the impurities. |
| 2. The filter element is damaged. | 2.Replace thefilterelement. |
Grooved Strainer
| ProductName | NameofMainParts | Material | ProductManufacturing andAcceptanceStandards |
| GroovedStrainer | Body | QT450-10 | Structurallengthstandard:GB/T2221 Pressureteststandard:GB/T13927 |
| Seal ring | NBR | ||
| Strainerscreen | Stainlesssteel | ||
| Bonnet | QT450-10 |
| Features | Applications | TechnicalParameters | |
| 1.Theproductfeaturesasimpleandadvancedstructure,with aquick-wearstrainerelement.Thefilterelementismadeof high-strength304stainlesssteel,featuringawaterflow throughthestrainerof18to30meshwhichofferslow | Itissuitableforinterceptingimpuri- tiesinthefluidsofthepipelinesto purifywaterorensurethenormal operationofotherequipmentinthe system | Waterflowspecification | 18to30mesh |
| drainageresistanceandconvenientsewagedisposal. | Nominal pressure | 1.6 | |
| 2.Thenumberofthemeshofthestrainerscreencanbeset dependingonuserrequirements. | Shelltest | 2.4MPa | |
| 3.Corrosionresistance:ThesealringismadeofNBRfor reliablesealingperformance. | Seal test | 1.76MPa | |
| 4.Groovedconnectionwithoutcomplexweldingorthreaded connectionoperationsallowsforquickattachmenttothe | Operatingtemperature | ≤80℃ | |
| pipelinesystemthroughthegroovedfittings. | Applicable medium | Water | |
GL81-16Q (Product Code:5061) Main Overall Dimensions and Connecting Dimensions
| DN | L | D1 | Quantity (piece/case) | Remark |
| 65 | 240 | 76 | 4 | |
| 80 | 270 | 89 | 4 | |
| 100 | 340 | 114 | 2 | |
| 125 | 400 | 140 | 2 | |
| 150 | 460 | 165 | 1 | |
| 200 | 520 | 219 | 1 |
Flange rubber connectors
| ProductName | Nameofmainparts | Materials |
| Flangerubber connector | Flange | QT450-10 |
| Rubberbody | Rubber+steelwirebraiding |
| Theadoptedstandards: |
| Design and manufacturing standard:HT/T 391 |
| FlangesizestandardGB/T 17241.6 |
| Features | Applications | TechnicalParameters | ||
| 1.Smallvolume，light weight,good elasticity，convenient installationandrepair. | Connectionforpipesof watersupply,compressed air,oil,acidandalkaliand othermedium. | Nominal pressure | 1.6MPa | 1.6MPa |
| 2.Theaxial,radical,angledisplacementmayoccurduring installationanditisnotlimitedbyeccentricityofuser'spipes | Testpressure | 2.4MPa | 2.4MPa | |
| andunparallelflange. 3.Thenoisetransferredbythestructuremaybereduced | Burst pressure | 4.8MPa | 4.8MPa | |
| whenworking,Strongabilityofvibrationabsorption. | Vacuumdegree | 100KPa | 100KPa | |
| 4.Withuseofspecialsyntheticrubber,maybeusedinpipes ofacid,alkaliandoilandcorrosivemedium. | Worktemperature | ≤80℃ | ≤80℃ | |
| Applicable medium | water | water | ||
KXT-16X (Product Code:7015)main external size and connection size
Unit: mm
Unit: mm
| DN | L | D1 | b | po-u | Quantity (piece/case) | Remark |
| 50 | 105 | 125 | 18 | 4-19 | 1 | |
| 65 | 115 | 145 | 20 | 4-19 | 1 | |
| 80 | 135 | 160 | 20 | 8-19 | 1 | |
| 100 | 150 | 180 | 22 | 8-19 | 1 | |
| 125 | 165 | 210 | 24 | 8-19 | 1 | |
| 150 | 180 | 240 | 24 | 8-23 | 1 | |
| 200 | 210 | 295 | 24 | 12-23 | 1 | |
| 250 | 230 | 355 | 26 | 12-28 | 1 | |
| 300 | 245 | 410 | 28 | 12-28 | 1 | |
| 350 | 255 | 470 | 28 | 16-28 | 1 | |
| 400 | 255 | 525 | 30 | 16-31 | 1 |
KXT-10X (Product Code:7016)main external size and connection size
Unit: mm
Unit: mm
| DN | L | D1 | b | n-0d | Quantity (piece/case) | Remark |
| 50 | 105 | 125 | 18 | 4-19 | 1 | 1.0MPA |
| 65 | 115 | 145 | 20 | 4-19 | 1 | 1.0MPA |
| 80 | 135 | 160 | 20 | 8-19 | 1 | 1.0MPA |
| 100 | 150 | 180 | 22 | 8-19 | 1 | 1.0MPA |
| 125 | 165 | 210 | 24 | 8-19 | 1 | 1.0MPA |
| 150 | 180 | 240 | 24 | 8-23 | 1 | 1.0MPA |
| 200 | 205 | 295 | 20 | 8-23 | 1 | 1.0MPA |
| 250 | 240 | 350 | 22 | 12-23 | 1 | 1.0MPA |
| 300 | 260 | 400 | 25 | 12-23 | 1 | 1.0MPA |
| 350 | 265 | 460 | 25 | 16-23 | 1 | 1.0MPA |
| 400 | 265 | 515 | 25 | 16-28 | 1 | 1.0MPA |
| 450 | 265 | 565 | 26 | 20-28 | 1 | 1.0MPA |
| 500 | 265 | 620 | 27 | 20-28 | 1 | 1.0MPA |
| 600 | 265 | 725 | 30 | 20-31 | 1 | 1.0MPA |
| 700 | 260 | 840 | 33 | 24-31 | 1 | 1.0MPA |
| 800 | 260 | 950 | 35 | 24-34 | 1 | 1.0MPA |
| 1000 | 260 | 1160 | 40 | 28-37 | 1 | 1.0MPA |
Note: Please note that the product specification or quotation with \bullet \" on the page is new.
Maximumdisplacementperformancetable
Unit: mm
Unit: mm
| Type | Nominalinside diameter（mm) | Axialelongation（mm) | Axialcompression（mm) | Transversal displacement(mm) | Angular displacement (mm) |
| KXT-16 | 50 | 6 | 10 | 10 | 30-20 |
| 65-80 | 8 | 15 | 12 | 30-20 | |
| 100-200 | 12 | 20 | 14 | 17-10 | |
| 250-600 | 14 | 22 | 20 | 9-5 | |
| 700-1000 | 16 | 25 | 22 | 4-3 |
Technical parameter:
| Nominalpressure | Testpressure | Burstpressure | Vacuumdegree | Worktemperature | Applicablemedium |
| 1.0MPA | 1.5 MPA | 3.0MPA | 53KPA | ≤80℃ | Water |
Fortherubberconnectorwithnominal insidediameterbelow 300mm and workpressureabove 1.6MPa,the anti-vacuum degree isnot less than 100KPa. The vacuum degree of rubber connector of other specification is specified by the supplier through agreement.
Structuralcharacteristics
Therubberconnectorisusuallymadeupof innerrubberlayer,fabricreinforcement layer,and intermediaterubberlayer,external rubberlayer,nd reinforcingmetal ring or steel wire ring andmetal flange.
| Storage,maintenance,installationanduse |
| 1.During transportationor storageprocessof theproduct,theproduct shouldbefreeof directsunlight,invasionof snow andrain,scratching of sharpdevicesandavoidcontactwithalltypesofacid,alkaliandoilaswellasalltypesoforganicsolvents.Duringtheuseprocess,ifcorrosion occursattherubberconnector,ensuretoreplaceintimetoavoidunnecessarytrouble. |
| mediumincludes:oil,acid,alkaliandothercorrosivemediumsand athightemperaturecondition,therubberconnectormadeofcorresponding specialmaterialshouldbeselected. |
| 3.Whenthedisplacementamountislargerthanorequalstothemaximumcompensationoftheconnector，theconnectorquantityshouldbe increasedtobalancethedisplacement.Theconnectorisforbiddenatthelimitdeflectiondisplacementanddeviationstateinordertoadjusttheover errorofpipes.Theconnectorcannotbeusedexceedingthelimit. |
| 4.Thepipesshouldbefixedonthesuspendedframe(hanger),supportingframeoranchoredframeforwatersupplyofhigh-risebuilding or |
| 5.Thevalvesshouldbestoredindryandventilatedroom;twoendsof thevalvepassageshouldbeblocked. |
| 6.Thevalvesforlong-termstorageshouldbeinspectedregularlytoremovethedirt |
| 7.Checkthevalvemarkcarefullybeforeinstallationandseewhetheritcomplieswiththeuserequirements. |
MaterialsandExecutiveStandardsofMainParts
| Features | NameofMainParts | Materials | ProductManufacturingand AcceptanceStandard |
| FlangedStrainerValve | Body | QT450-10 | Design and manufacturing standard: GB-T12233 Structurallengthstandard:GB/T12221-200 Pressureteststandard:GB/T13927 |
| Bonnet | QT450-10 | ||
| Strainerscreen | QT450-10 | ||
| Stemnut | ZCuA19Mn2 | ||
| Stem | 2Cr13 |
| Features | Applications | TechnicalParameters | ||
| 1.Simplestructureandeasy toinstallandmaintain. | Suitableforopeningandclosingon | Nominal pressure | 1.6MPa | 2.4MPa |
| Seal(water) testpressure | ||||
| water,steamandgasolinepipelines. | Airtight(water)testpressure | 1.8MPa | ||
| 2.With a small working stroke,the opening and closing time isshort.It alongservicelife | Operatingtemperature | ≤200℃ | ||
| Applicablemedium | Water,vapor,oils | |||
| DN | L | H2 | D1 | n-Od | Quantity (piece/case) | Remark |
| 50 | 230 | 346 | 125 | 4-19 | 2 | |
| 65 | 290 | 374 | 145 | 4-19 | 2 | |
| 80 | 310 | 435 | 160 | 8-19 | 1 | |
| 100 | 350 | 496 | 180 | 8-19 | 1 | |
| 125 | 400 | 542 | 210 | 8-19 | 1 | |
| 150 | 480 | 620 | 240 | 8-23 | 1 | |
| 200 | 600 | 745 | 295 | 12-23 | 1 |
Overview of control valve series products:
The control valve seriesproducts mainly includedifferential pressurebypassbalancevalve,pressurereducingvalve,flange single opening exhaust valve and products of many specifications and are mainly used in the water supply system with parallel connection of firewater and domesticwater.It is thevalve toadjust thewatersupply direction.
nternalstructureofthecontrolyalve
Seethefollowingtableformaterialsof mainpartsofthecontrolvalveseriesproducts:
| ProductName | NameofMainParts | Materials |
| Differentialpressure bypassbalancevalve | Valvebody | QT450-10 |
| Valveseat | QT450-10 | |
| Valvecover | QT450-10 | |
| Valvecover | QT450-10 | |
| Sealingring | Nitrile rubber | |
| Pressure reducingvalve | Valvebody | QT450-10 |
| Valveseat | QT450-10 | |
| Valvecover | QT450-10 | |
| Valvecover | QT450-10 | |
| Sealing ring | Nitrile rubber | |
| Flange single opening exhaustvalves | Valvebody | QT450-10 |
| Valveseat | QT450-10 | |
| Valvecover | QT450-10 | |
| Valvecover | QT450-10 | |
| Sealing ring | Nitrilerubber |
The adopted standards:
| Series | Adoptedstandards |
| Flange single opening exhaustvalves | Flange size standard:GB/T17241.6 |
| Pressure test standard:GB/T13027 | |
| Flange size standard:GB/T 17241.6 | |
| Pressure reducingvalve | Design and manufacturing standard: HT/T 219 |
| Pressure teststandard:GB/T12245 | |
| Flange size standard:GB/T17241.6 | |
| Differential pressure bypass balancevalve | The adopted standards Design and manufacturing standard: HT/T 219 |
| Pressure teststandard:GB/T12245 |
Remote control floating ball valves
| Theadoptedstandards: |
| CJ/T219-2017hydrauliccontrolvalve |
| GB/T 17241.6 Integral cast ironpipe flanges |
| Features | Applications | TechnicalParameters | |
| Abletocontrolwaterlevelofthewatertowerorwater tankeffectivelybycuttingoropeningthevalveelement tofeedwaterorpreventexternalflowofwater.The liquidlevelcontrolisaccurateandisnotaffectedby pressurefluctuation.Nowaterleaksiftheswitchis closed tightly.Flexibleballandsimplemaintenance. | Applicabletotheautomat- icwatersupplysystemof watertank,waterpooland watertowerofmining， enterprisesand high-rise buildings. | Nominalpressure | 1.6MPa |
| Casing test | 2.4MPa | ||
| Sealingtest | 1.76MPa | ||
| Worktemperature Applicablemedium | ≤80℃ Water | ||
SJ100X-16Q (Product Code:8041）main external size and connection size
| DN | L | D1 | H | T | n-Od | Quantity (piece/case) | Remark |
| 50 | 210 | 125 | 380 | 250 | 4-18 | 1 | |
| 65 | 230 | 145 | 400 | 270 | 4-18 | 1 | |
| 80 | 250 | 160 | 460 | 260 | 8-18 | 1 | |
| 100 | 300 | 180 | 510 | 280 | 8-18 | 1 | |
| 150 | 370 | 240 | 600 | 340 | 8-23 | 1 | |
| 200 | 450 | 295 | 650 | 390 | 12-23 | 1 |
Pressure reducing valves
| Features | Applications | Technicalstandard | TechnicalParameters | ||
| 1.Usetheselfforceoftheguidevalveto control.Noneedofotherdevicesand energy:simple maintenance. | CJ/T219-2005 hydrauliccontrolvalve | Usedfordomesticwater supply,fire fighting water supplyandotherIndustrial reducing guide valve. Widelyused inthewater supplypipeline network of | Nominal pressure | 1.0MPa | 1.6MPa |
| 2.High standard ofpressurecontrol,small influence fromtheinletpressure and flowrate，stablepressurereductionand | GB/T17241.6 Integral castironpipe flanges | Casing test water supply.The outlet pressuremaybeadjusted byadjustingthepressure | 1.5MPa | 2.4MPa | |
| stabilizing. 3.Thevalvebodyadoptsprecisioncasting Theaccurategeometricsizeensuresthe | GB/T12245-2006pressurereducing | Sealing test | 1.1MPa | 1.76MPa | |
| sealingperformanceofthevalve. 4.Thevalve inside is coated with non-poi- | valve:performancetestmethod GB/T12244-2006pressurereducing | Work high-rise buildings and temperature living quarters and urban watersupplyengineering. | ≤80℃ | ≤80℃ | |
| sonousepoxyresinsothattheunboiled water can be drunk. | valve:generalrequirements. | Applicable medium | Water | Water | |
SJ200X-16Q (Product Code:8031）main external size and connection size
| DN | L | D1 | pO-u | H | T | Quantity (piece/case) | Remark |
| 50 | 210 | 125 | 4-18 | 360 | 250 | 1 | |
| 65 | 230 | 145 | 4-18 | 370 | 270 | 1 | |
| 80 | 250 | 160 | 8-18 | 420 | 280 | 1 | |
| 100 | 300 | 180 | 8-18 | 450 | 290 | 1 | |
| 125 | 340 | 210 | 8-18 | 490 | 310 | 1 | |
| 150 | 370 | 240 | 8-23 | 520 | 380 | 1 | |
| 200 | 450 | 295 | 12-23 | 550 | 400 | 1 |
SJ200X-10Q (Product Code:8032)main external size and connection size
| DN | L | D1 | n-Od | H | T | Quantity (piece/case) | Remark | |
| 50 | 210 | 125 | 4-19 | 360 | 250 | 1 | 1.0MPA | |
| 65 | 230 | 145 | 4-19 | 370 | 270 | 1 | 1.0MPA | |
| 80 | 250 | 160 | 8-19 | 420 | 280 | 1 | 1.0MPA | |
| 100 | 300 | 180 | 8-19 | 450 | 290 | 1 | 1.0MPA | |
| 125 | 340 | 210 | 8-19 | 490 | 310 | 1 | 1.0MPA | |
| 150 | 370 | 240 | 8-23 | 520 | 380 | 1 | 1.0MPA | |
| 200 | 450 | 295 | 8-23 | 550 | 400 | 1 | 1.0MPA |
Note: Please note that the product specification or quotation with “" on the page is new.
) Considerations for use and operation of pressure reducing valveproducts:
| 1.lnstallationrequirements | 2.Maintenanceandtroubleshooting |
| Thereisnoorientationrequirementfor installation of the valve. But the optimal method is horizontal installation.The sundries inside the pipes should be cleaned completely.Note that the arrow head on the valve body should be consis- tent with water flow direction. After installa- tion,no pipeline pressure acts on valve body and components inside the valve. | This valve is the self-lubricating valve with use of water.There is no need to add machine oil for lubrication. In case that the component inside the mainvalve is damaged,please dismantle,maintainandreplace the parts according to the following order. |
| 1.Close thegatevalvebefore andbehind the mainvalve first. | |
| 2. Loosen the joint screw of the pipe on themain valve cover to discharge the pressure inside the valve. | |
| Onegatevalveandfilterare installed before the main valve. One gate valve is installed behind the main valve for the purpose of convenient repair. | |
| 4.Take down the valve cover and spring. | |
| The guide valve and guidepipe control system are assembled and debugged before delivery.If the delivery setting requirementofthemainvalvedoesnot comply with onsite requirements,it can be adjustedbytightening orloosening the screw on the guide valve.Tightening in clockwise direction is to increase the pres- sure. Loosening in anti-clockwise direction istoreduce thepressure.Tightenthe locking nut after adjustment is completed. | 5.Takedown the central spindle and ensure not to damage themembrane.Checkwhether themembrane and O-shaped ring are damaged.If there is damage,there is noneed to dismantle theinnerparts.If the membrane is found damaged,continue to dismantle the membrane and O-ring.Take them out andreplace with new membrane and |
| O-ring. valve,remove them. | |
| 7.Install thereplaced parts toassemble the mainvalve according to the reverse order.Afterassembly,the valve should not be jammed. |
3. Possible failure, reasons and troubleshooting
| Failurephenomenon | Reasonsofthefailure | Troubleshooting |
| Notreduceand stabilizethe pressure | Thewaterinletandoutletisinstalled in reverse direction. | Adjust it. |
| The membrane of themainvalve is damaged. | Replace the membrane of the main valve. | |
| The needle valve is not opened. | Open the needle valve | |
| The ball valve is not opened. | Open the ball valve. | |
| The adjustablepressurereducing membrane is damaged. | Replace thepressurereducing membrane. | |
| There isforeign body inside thevalve. | Clean it. | |
| Abnormal sound | Thereisforeignbody inside thevalve. | Remove impurities. |
| The closing speed is too quick. | Adjust the openness degree of the needlevalve. |
Slowly closing silencing check valves
| Technicalstandard |
| CJ/T219-2017hydrauliccontrolvalve |
| GB/T 17241.6Integral cast iron pipe flanges |
| Features | Applications | TechnicalParameters | |
| Withthecheckfunctionofopenandclosespeed adjustment.After thevalveis installed,thewaterpump iscontrolledeffectively.When thewaterpumpstarts and stops, it will adjust the optimal speed automatically. | Applicable to thesystem with watersupplyanddrainage systemprovided by thepump directlyin industrialand mining enterprises and high-riseenterprisetoreduce thegene-rationofwater hammerandwaterattackto achieve theresultofsafe closing. | Nominal pressure | 1.6MPa |
| Casing test | 2.4MPa | ||
| Sealing test | 1.76MPa | ||
| Worktemperature Applicablemedium | 0.08> Water | ||
SJ300X-16Q (Product Code:8051）main external size and connection size
| DN | L | D1 | H | T | pO-u | Quantity (piece/case) | Remark |
| 50 | 210 | 125 | 380 | 250 | 4-18 | 1 | |
| 65 | 230 | 145 | 400 | 270 | 4-18 | 1 | |
| 80 | 250 | 160 | 460 | 260 | 8-18 | 1 | |
| 100 | 300 | 180 | 510 | 280 | 8-18 | 1 | |
| 150 | 370 | 240 | 600 | 340 | 8-23 | 1 | |
| 200 | 450 | 295 | 650 | 390 | 12-23 | 1 |
| Technicalstandard |
| CJ/T219-2017hydrauliccontrolvalve |
| GB/T 17241.6 Integral cast iron pipe flanges |
| Features | Applications | TechnicalParameters | |
| Release thepressurethatexceedsthesetsafetyvalueby guidevalve 1effectively on thepipes toprevent damage to thepipes andequipment due tooverpressure. | Applicabletothesystemwith watersupplyand drainage system provided by the pump directly in industrial and mining enterprisesandhigh-riseenter- prisetoreducethegeneration ofwaterhammerandwater attacktoachievetheresultof safe closing. | Nominal pressure | 1.6MPa |
| Casing test | 2.4MPa | ||
| Sealing test | 1.76MPa | ||
| Worktemperature | 0.08> | ||
| Applicable medium | Water | ||
SJ500X-16Q(Product Code:8071）main external size andconnection size
| DN | L | D1 | H | T | pO-u | Quantity (piece/case) | Remark |
| 50 | 210 | 125 | 380 | 250 | 4-18 | 1 | |
| 65 | 230 | 145 | 400 | 270 | 4-18 | 1 | |
| 80 | 250 | 160 | 460 | 260 | 8-18 | 1 | |
| 100 | 300 | 180 | 510 | 280 | 8-18 | 1 | |
| 150 | 370 | 240 | 600 | 340 | 8-23 | 1 | |
| 200 | 450 | 295 | 650 | 390 | 12-23 | 1 |
Note: Please note that the product specification or quotation with "on thepage is new.
Hydraulic power electric control valves
| Technicalstandard |
| CJ/T219-2005hydrauliccontrolvalve |
| GB/T 17241.6 Integral cast iron pipe flanges |
| Features | Applications | TechnicalParameters | |
| Simple to repair, convenient touse;safe and reliable | Used to install in thepipesas electricremotecontroltoopen and close.In addition,the speed controldevice.The large-scaleelectricdevice replacing opening and closing ofgatevalve. | Nominal pressure | 1.6MPa |
| Casing test | 2.4MPa | ||
| Sealing test | 1.76MPa | ||
| Worktemperature | ≤80℃ | ||
| Applicable medium | Water | ||
SJ600X-16Q (Product Code:8081） main external size and connection size
| DN | L | D1 | H | T | n-Od | Quantity (piece/case) | Remark |
| 50 | 210 | 125 | 380 | 250 | 4-18 | 1 | |
| 65 | 230 | 145 | 400 | 270 | 4-18 | 1 | |
| 80 | 250 | 160 | 460 | 260 | 8-18 | 1 | |
| 100 | 300 | 180 | 510 | 280 | 8-18 | 1 | |
| 150 | 370 | 240 | 600 | 340 | 8-23 | 1 | |
| 200 | 450 | 295 | 650 | 390 | 12-23 | 1 |
Note: Please note that the product specification or quotation with *s on the page is new.
Differential pressure bypass balance valves
| Features | Technicalstandard | Applications | TechnicalParameters | ||
| 1.Automaticcontrolwithuseof hydraulicpower.Thereisnoneed ofotherdevicesandenergy.Simple | CJ/T219-2005hydrauliccontrolvalve | Widelyusedatthepipe pumpoutletofwater supplyand drainageas wellas petroleum,chemi- calengineeringandother | Nominalpressure | 1.0MPa | 1.6MPa |
| maint-enance. 2.Thesystemdoesnotneed toset specialized firefightingseparate | Casing test industrialdepartmentsto Sealing test | 1.5MPa | 2.4MPa | ||
| water supply pipeline network, whichsavestheconstructioncist andwaterconsumptionsignificantly. | GB/T17241.6Integralcastironpipeflanges | preventreveresflowof medium.The product features simple structure. Worktemperature | 1.1MPa | 1.76MPa | |
| 3.Highcontrolsensitivityofthe valve，safe andreliable,simple debugging and long service life. | GB/T13927Generalvalve:pressuretest | Maintenance,repair,trans- portationareconvenient. | Applicable medium | ≤80℃ Water | ≤80℃ Water |
| 1.lnstallationrequirements | 2.Maintenanceandtroubleshooting |
| 1.There isno orientationrequirement forinstallation of thevalve.But the optimall method is horizontal installation.The sundries inside the pipes should be cleaned completelybeforeinstallation.Note that thearrowheadonthevalvebodyshould be consistent withwaterflow direction. | 1.Check whether the differential pressure between the supplied water/return water isbetween therequired scoperegularly. |
| 2.Onegate valve is installed before and after the main valvefor the purpose of convenientrepair. | |
| 3.Check whether all gatevalves,ballvalves and needle valves are at the full-pass statebeforeuse. | 2.Possible conditions:The differentialpressure between the supplied water/returnwaterisless than thesetvalve;checkwhether the main valve is blocked by foreign matters,which cause it failed to close.Checkwhether theneedle valve isclosed completely or almost closed.The differentialpressure between the supplied water/returnwaterislarger than thesetvalve.Checkwhether the ballvalveisclosed and theguidevalve isblocked byforeign |
| 4.Observe pressure between the supplied water andreturn water.Adjust the differentialpressureguidevalveaccordingto thedifferentialpressurevalve.Open thedriftcapontheguidevalveanduseaspannertorotatethescrewrodonthe top.Seeing fromtop tobottom,thedifferentialpressureincreaseswithclockwise rotationand decreaseswith anti-clockwiserotation.Makerotationaccording to therequiredleftvalue.Whenthedifferentialpressurereachesthe targetvalve, matters. screw in the drift cap.At the condition,the differential pressure is ensured at the set differential pressure value nomatter how the pipe pressure changes. |
SJ800X-16Q(ProductCode:8021) mainexternal sizeand connection size
Unit: mm
Unit: mm
| DN | L | D1 | pO-u | H | T | Quantity (piece/case) | Remark |
| 50 | 210 | 125 | 4-18 | 380 | 250 | 1 | |
| 65 | 230 | 145 | 4-18 | 400 | 270 | 1 | |
| 80 | 250 | 160 | 8-18 | 460 | 260 | 1 | |
| 100 | 300 | 180 | 8-18 | 510 | 280 | 1 | |
| 125 | 340 | 210 | 8-18 | 550 | 320 | 1 | |
| 150 | 370 | 240 | 8-23 | 600 | 340 | 1 | |
| 200 | 450 | 295 | 12-23 | 650 | 390 | 1 |
SJ800X-10Q (ProductCode:8022) main external size and connection size
Unit: mm
Unit: mm
| DN | L | D1 | n-Od | H | T | Quantity (piece/case) | Remark |
| 50 | 210 | 125 | 4-19 | 380 | 250 | 1 | 1.0MPA |
| 65 | 230 | 145 | 4-19 | 400 | 270 | 1 | 1.0MPA |
| 80 | 250 | 160 | 8-19 | 460 | 260 | 1 | 1.0MPA |
| 100 | 300 | 180 | 8-19 | 510 | 280 | 1 | 1.0MPA |
| 125 | 340 | 210 | 8-19 | 550 | 320 | 1 | 1.0MPA |
| 150 | 370 | 240 | 8-23 | 600 | 340 | 1 | 1.0MPA |
| 200 | 450 | 295 | 8-23 | 650 | 390 | 1 | 1.0MPA |
Note: Please note that the product specification or quotation with“ "on the page is new.
⊚ Emergency shut-off valves
| Technicalstandard |
| CJ/T219-2005hydrauliccontrolvalve |
| GB/T 17241.6 Integral cast iron pipe flanges |
| Features | Applications | TechnicalParameters | |
| Savemorecost than traditionalseparatewatersupplyfor fire fighting. | Usedin the watersupply system where the fire water is connected with domestic water in parallel in living quar- ters.Whenfirewaterisused, thevalve closes the domestic wateremergentlytoensure fire water.When fire fighting ends,the valve opens auto- matically torestore supply of domestic water. | Nominal pressure | 1.6MPa |
| Casing test | 2.4MPa | ||
| Sealing test | 1.76MPa | ||
| Worktemperature Applicable medium | 0.08 Water | ||
| DN | L | D1 | H | T | pO-u | Quantity (piece/case) | Remark |
| 50 | 210 | 125 | 380 | 250 | 4-18 | 1 | |
| 65 | 230 | 145 | 400 | 270 | 4-18 | 1 | |
| 80 | 250 | 160 | 460 | 260 | 8-18 | 1 | |
| 100 | 300 | 180 | 510 | 280 | 8-18 | 1 | |
| 150 | 370 | 240 | 600 | 340 | 8-23 | 1 | |
| 200 | 450 | 295 | 650 | 390 | 12-23 | 1 |
Note: Please note that the product specification or quotation with “"on the page is new.
Flange single opening exhaust air valves
| Features | Technicalstandard | Applications | TechnicalParameters | ||
| 1.The exhaustvalveis circular brass valve body.Theinternal structuremainlyinclude stainless steelfloatingball.Simpleoverall structureissimple and quick venting speed. | GB/T 17241.6 Integral cast iron pipe flanges | Used forpipe exhaust so that the pipes will notoccurwithblocked air,airlock.lfthewater pump is disconnected with power supply | Nominal pressure | 1.0MPa | 1.6MPa |
| Casing test | 1.5MPa | 2.4MPa | |||
| 2.Thevalvebodyadoptsprecision casting.Theprecisegeometricsize ensuresthesealingperformanceof the valve. | negative pressure will appear.Automatic air GB/T13927Generalvalve:pressuretest sucking mayprotect the pipe safety. | Sealing test Work | 1.1MPa | 1.76MPa | |
| temperature Applicable medium | ≤80℃ | ≤80C | |||
| 3.Thevalveinsideiscoatedwith non-pois onous epoxy resin so that theunboiledwatercanbedrunk. | Water | Water | |||
QB1-16Q (Product Code:8011）main external size and connection size
Unit: mm
Unit: mm
| Remark | |||||||
| 50 | 160 | 125 | 4-18 | 210 | 155 | 4 | |
| 65 | 185 | 145 | 4-18 | 220 | 155 | 4 | |
| 80 | 190 | 160 | 8-18 | 220 | 180 | 4 | |
| 100 | 210 | 180 | 8-18 | 230 | 175 | 2 | |
| 125 | 245 | 210 | 8-18 | 320 | 315 | 1 | |
| 150 | 285 | 240 | 8-23 | 340 | 315 | 1 | |
| 200 | 340 | 295 | 12-23 | 370 | 375 | 1 |
QB1-10Q(Product Code:8012)main external size and connection size
Unit: mm
Unit: mm
| DN | L | D1 | pO-u | H | T | Quantity (piece/case) | ||
| 50 | 160 | 125 | 4-19 | 210 | 155 | 4 | 1.0MPA | |
| 65 | 185 | 145 | 4-19 | 220 | 155 | 4 | 1.0MPA | |
| 80 | 190 | 160 | 8-19 | 220 | 180 | 4 | 1.0MPA | |
| 100 | 210 | 180 | 8-19 | 230 | 175 | 2 | 1.0MPA | |
| 125 | 245 | 210 | 8-19 | 320 | 315 | 1 | 1.0MPA | |
| 150 | 285 | 240 | 8-23 | 340 | 315 | 1 | 1.0MPA | |
| 200 | 340 | 295 | 8-23 | 370 | 375 | 1 | 1.0MPA |
Note: Please note that the product specification or quotation with *s on the page is new.
LESSO CAST STEE LVALVE
SUCCESS IN QUALITY
⊚ Steel casting flange gate valves
Materialsofmainpartsandcomponentsandadoptedstandards:
| NameofMainParts | Materials | Technicalstandardforproduct manufacturing and acceptance |
| Valvebody | WCB | Designand manufacturing standard: GB/T12234 Press teststandard:JB/T9092 |
| Valvecover | WCB | |
| Flashboard | WCB+stainless steel | |
| Valverod | Carbon steel,stainlesssteel | |
| Valverodnut | Brass |
| Features | Applications | TechnicalParameters | |||||
| Light and smooth opening and closing | Applicabletoall types offull-open and full-close types, notapplicableto throttling. | Nominalpressure | 1.6Mpa | 2.5Mpa | 4.0Mpa | 6.4Mpa | |
| Casing test | 2.4Mpa | 3.8Mpa | 6.15Mpa | 9.75Mpa | |||
| Sealing test | 1.8Mpa | 2.8Mpa | 4.51Mpa | 7.15Mpa | |||
| Worktemperature | ≤200℃ | ≤200℃ | ≤200℃ | ≤200℃ | |||
| Applicable medium | water、vaporand oilproducts | water、vaporand oilproducts | water、vapor and oilproducts | water、vapor and oilproducts | |||
Z41H-16C(Product Code:1502)main external size and connection size
| DN | L | D1 | H2 | n-0d | Quantity (piece/case) | Remark |
| 50 | 250 | 125 | 388 | 4-18 | 2 | |
| 65 | 270 | 145 | 423 | 4-18 | 2 | |
| 80 | 280 | 160 | 472 | 8-18 | 1 | |
| 100 | 300 | 180 | 551 | 8-18 | 1 | |
| 125 | 325 | 210 | 665 | 8-18 | 1 | |
| 150 | 350 | 240 | 764 | 8-22 | 1 | |
| 200 | 400 | 295 | 938 | 12-22 | 1 | |
| 250 | 450 | 355 | 1175 | 12-26 | 1 | |
| 300 | 500 | 410 | 1391 | 12-26 | 1 | |
| 350 | 550 | 470 | 1535 | 16-26 | 1 | |
| 400 | 600 | 525 | 1732 | 16-30 | 1 | |
| 450 | 650 | 585 | 1907 | 20-30 | 1 | |
| 500 | 700 | 650 | 2118 | 20-33 | 1 | |
| 600 | 800 | 770 | 2585 | 20-36 | 1 |
Z41H-25 (Product Code:1501） main external size and connection size
Unit: mm
Unit: mm
| DN | L | D1 | H2 | pO-u | Quantity (piece/case) | Remark |
| 50 | 250 | 125 | 388 | 4-18 | 2 | |
| 65 | 270 | 145 | 423 | 8-18 | 2 | |
| 80 | 280 | 160 | 472 | 8-18 | 1 | |
| 100 | 300 | 190 | 560 | 8-22 | 1 | |
| 125 | 325 | 220 | 660 | 8-26 | 1 | |
| 150 | 350 | 250 | 764 | 8-26 | 1 | |
| 200 | 400 | 310 | 938 | 12-26 | 1 | |
| 250 | 450 | 370 | 1174 | 12-30 | 1 | |
| 300 | 500 | 430 | 1391 | 16-30 | 1 | |
| 350 | 550 | 490 | 1535 | 16-33 | 1 | |
| 400 | 600 | 550 | 1732 | 16-36 | 1 | |
| 450 | 650 | 600 | 1907 | 20-36 | 1 | |
| 500 | 700 | 660 | 2118 | 20-36 | 1 | |
| 600 | 800 | 770 | 2585 | 20-39 | 1 |
Z41H-40 (Product Code:1504)main external size and connection size
Unit: mm
Unit: mm
| DN | L | D1 | H2 | pO-u | Quantity (piece/case) | Remark |
| 50 | 250 | 125 | 388 | 4-18 | 2 | |
| 65 | 280 | 145 | 443 | 8-18 | 2 | |
| 80 | 310 | 160 | 506 | 8-18 | 1 | |
| 100 | 350 | 190 | 508 | 8-22 | 1 | |
| 125 | 400 | 220 | 674 | 8-26 | 1 | |
| 150 | 450 | 250 | 788 | 8-26 | 1 | |
| 200 | 550 | 320 | 986 | 12-30 | 1 | |
| 250 | 650 | 385 | 1148 | 12-33 | 1 | |
| 300 | 750 | 450 | 1349 | 16-33 | 1 | |
| 350 | 850 | 510 | 1513 | 16-36 | 1 | |
| 400 | 950 | 585 | 1711 | 16-39 | 1 |
Z41H-64 (Product Code:1505) main external size and connection size
Unit: mm
Unit: mm
| DN | L | D1 | H2 | pO-u | Quantity (piece/case) | Remark |
| 50 | 250 | 135 | 424 | 4-22 | 2 | |
| 65 | 280 | 160 | 458 | 8-22 | 2 | |
| 80 | 310 | 170 | 504 | 8-22 | 1 | |
| 100 | 350 | 200 | 588 | 8-26 | 1 | |
| 125 | 400 | 240 | 685 | 8-30 | 1 | |
| 150 | 450 | 280 | 790 | 8-33 | 1 | |
| 200 | 550 | 345 | 982 | 12-36 | 1 | |
| 250 | 650 | 400 | 1164 | 12-36 | 1 | |
| 300 | 750 | 460 | 1367 | 16-36 | 1 | |
| 350 | 850 | 525 | 1520 | 16-39 | 1 |
BUTTERFLY VALVE SERIES
\circledast Butterfly Valves Series
Materials of mainparts and components and adopted standards:
| Nameofmainparts | Materials | Technicalstandardforproduct manufacturingandacceptance |
| Valvebody | WCB | Design and manufacturing standard: GB/T12234 Press test standard:JB/T 9092 |
| Butterflyplate | WCB | |
| Supportingrack | WCB | |
| Press ring | WCB | |
| Valverod | 2Cr13 | |
| Sealing ring | Stainlesssteel |
| NameofMainParts | Materials | Technicalstandardforproduct manufacturingandacceptance | |
| Theadoptionoftripleeccentricandfour dimensionalstructureensuresreliablestrength. 90 degreesrotation,quick opening and closing. Thefourdimensionincreasesthesealingarea ofstabilityofvalveplateandvalveseat.More reliable thanthree-dimensionalsealing. | Widelyusedinpetrochemicalengineer- ing,light industry,metallurgy，power generation,water supply and drainage, medicaletcallcorrosiveandnoncorro- sive gas,liquid,semi-liquid,used as regulatingandthrottlingdevices. | Nominal pressure | 1.6Mpa |
| Strength(water)testpressure | 2.4Mpa | ||
| Sealing(water)testpressure | 1.8MPa | ||
| Butterflyplaterotationangle | 。06 | ||
| Worktemperature | ≤200℃ Water,vaporand | ||
| Applicable medium | oilproducts | ||
D373H-16C (Product Code:2027）main external size and connection size
Unit: mm
Unit: mm
| DN | L | D1 | H | pO-u | Quantity (piece/case) | Remark |
| · 50 | 43 | 110 | 112 | 4-18 | 4 | |
| · 65 | 46 | 130 | 115 | 4-18 | 4 | |
| · 80 | 49 | 150 | 120 | 8-18 | 3 | |
| ·100 | 56 | 170 | 138 | 8-18 | 2 | |
| ·125 | 64 | 200 | 164 | 8-18 | 2 | |
| ·150 | 70 | 225 | 175 | 8-22 | 2 | |
| ·200 | 89 | 280 | 208 | 12-22 | 2 | |
| ·250 | 114 | 335 | 243 | 12-26 | 2 | |
| ·300 | 114 | 395 | 283 | 12-26 | 1 | |
| ·350 | 127 | 445 | 310 | 16-26 | 1 | |
| ·400 | 140 | 495 | 340 | 16-30 | 1 | |
| ·450 | 152 | 550 | 380 | 20-30 | 1 | |
| ·500 | 152 | 600 | 410 | 20-33 | 1 | |
| · 600 | 154 | 705 | 507 | 20-36 | 1 |
Note: Please note that the product specification or quotation with “”on the page is new.
Flange worm gear transmission butterfly valves
Materialsof mainparts andcomponentsand adoptedstandards:
| NameofMainParts | Materials | Technicalstandardforproduct manufacturingandacceptance |
| Valvebody | WCB | |
| Valvecover | WCB | |
| Valve clack | WCB | Design and manufacturing standard:JB/T8527 |
| Press ring | WCB | Pressteststandard:GB/T13927 |
| Valverod | 2Cr13 | |
| Sealing ring | Stainlesssteel |
| Features | Applications | TechnicalParameters | |||
| Theadoptionoftripleeccentric andfour-dimensionalstructure ensuresreliable strength.90 degreesrotation,quickopening and closing.The four dimension increasesthesealingareaof stabilityofvalveplateandvalve seat.Morereliable than three-di- mensional sealing. | Widelyusedinpetrochemical engineering,lightindustry, metallurgy.powergenera- tion,water supply and drain- age,medicaletcallcorrosive and non corrosivegas,liquid, semi-liquid,used asregulat- ingand throttlingdevices. | Nominalpressure | 1.0Mpa | 1.6Mpa | 1.6Mpa |
| Strength(water)testpressure | 1.5Mpa | 2.4Mpa | 2.4Mpa | ||
| Sealing (water) test pressure | 1.1MPa | 1.8MPa | 1.8MPa | ||
| Worktemperature | ≤200℃ | ≤200℃ | 90° | ||
| Applicable medium | Water,vaporand oilproducts | Water,vaporand oilproducts | ≤200℃ | ||
| Butterflyplaterotationangle | 。06 | 06 | Water,vaporand oilproducts | ||
D343H-10C(Product Code:2153)main external size and connection size
| DN | L | D1 | H | n-0d | Quantity (piece/case) | Remark |
| ·50 | 108 | 125 | 350 | 4-18 | 4 | |
| ·65 | 112 | 145 | 370 | 4-18 | 4 | |
| ·80 | 114 | 160 | 380 | 8-18 | 2 | |
| ·100 | 127 | 180 | 420 | 8-18 | 2 | |
| ·125 | 140 | 210 | 460 | 8-18 | 2 | |
| ·150 | 140 | 240 | 555 | 8-22 | 1 | |
| ·200 | 152 | 295 | 605 | 8-22 | 1 | |
| ·250 | 165 | 350 | 680 | 12-22 | 1 | |
| ·300 | 178 | 400 | 800 | 1 2-22 | 1 | |
| ·350 | 190 | 460 | 835 | 16-22 | 1 | |
| ·400 | 216 | 515 | 915 | 16-26 | 1 | |
| ·450 | 222 | 565 | 960 | 20-26 | 1 | |
| ·500 | 229 | 620 | 1020 | 20-26 | 1 | |
| ·600 | 267 | 725 | 1225 | 20-30 | 1 | |
| ·700 | 292 | 840 | 1355 | 24-30 | 1 | |
| ·800 | 318 | 950 | 1470 | 24-33 | 1 | |
| · 900 | 330 | 1050 | 1545 | 28-33 | 1 | |
| ·1000 | 410 | 1160 | 1795 | 28-36 | 1 | |
| ·1200 | 470 | 1380 | 1965 | 32-39 | 1 | |
| ·1400 | 530 | 1590 | 2380 | 36-42 | 1 | |
| ·1600 | 600 | 1820 | 2956 | 40-48 | 1 | |
| ·1800 | 670 | 2020 | 3221 | 44-48 | 1 |
Note: Please note that the product specification or quotation with “”on the page is new.
Unit: mm
| DN | L | D1 | H | n-0d | Quantity (piece/case) | Remark |
| ·50 | 108 | 125 | 350 | 4-18 | 4 | |
| ·65 | 112 | 145 | 370 | 4-18 | 4 | |
| ·80 | 114 | 160 | 380 | 8-18 | 2 | |
| ·100 | 127 | 180 | 420 | 8-18 | 2 | |
| ·125 | 140 | 210 | 460 | 8-18 | 2 | |
| ·150 | 140 | 240 | 555 | 8-22 | 1 | |
| ·200 | 152 | 295 | 605 | 12-22 | 1 | |
| ·250 | 165 | 355 | 680 | 12-26 | 1 | |
| ·300 | 178 | 410 | 800 | 12-26 | 1 | |
| ·350 | 190 | 470 | 835 | 16-26 | 1 | |
| ·400 | 216 | 525 | 915 | 16-30 | 1 | |
| ·450 | 222 | 585 | 960 | 20-30 | 1 | |
| ·500 | 229 | 650 | 1020 | 20-33 | 1 | |
| ·600 | 267 | 770 | 1225 | 20-36 | 1 | |
| ·700 | 292 | 840 | 1355 | 24-36 | 1 | |
| ·800 | 318 | 950 | 1470 | 24-39 | 1 | |
| 006· | 330 | 1050 | 1545 | 28-39 | 1 | |
| ·1000 | 410 | 1170 | 1795 | 28-42 | 1 | |
| ·1200 | 470 | 1390 | 1965 | 32-48 | 1 | |
| ·1400 | 530 | 1590 | 2380 | 36-48 | 1 | |
| ·1600 | 600 | 1820 | 2956 | 40-55 | 1 |
| DN | L | D1 | H | n-0d | Quantity (piece/case) | Remark |
| ·50 | 108 | 125 | 350 | 4-18 | 4 | |
| ·65 | 112 | 145 | 370 | 8-18 | 4 | |
| ·80 | 114 | 160 | 380 | 8-18 | 2 | |
| ·100 | 127 | 190 | 420 | 8-22 | 2 | |
| ·125 | 140 | 220 | 460 | 8-26 | 2 | |
| ·150 | 140 | 250 | 555 | 8-26 | 1 | |
| ·200 | 152 | 310 | 605 | 12-26 | 1 | |
| ·250 | 165 | 370 | 680 | 12-30 | 1 | |
| ·300 | 178 | 430 | 800 | 16-30 | 1 | |
| ·350 | 190 | 490 | 835 | 16-33 | 1 | |
| ·400 | 216 | 550 | 915 | 16-36 | 1 | |
| ·450 | 222 | 600 | 960 | 20-36 | 1 | |
| ·500 | 229 | 660 | 1020 | 20-36 | 1 | |
| ·600 | 267 | 770 | 1225 | 20-39 | 1 | |
| ·700 | 292 | 875 | 1355 | 24-42 | 1 | |
| ·800 | 318 | 990 | 1470 | 24-48 | 1 | |
| ·900 | 330 | 1090 | 1545 | 28-48 | 1 | |
| ·1000 | 410 | 1210 | 1795 | 28-55 | 1 | |
| ·1200 | 470 | 1420 | 1965 | 32-55 | 1 |
Note: Please note that the product specification or quotation with “"on the page is new.
⊚ Flange swing type check valves
| Materialsofmainpartsandcomponentsandadoptedstandards: | |||||||
| NameofMainParts | Materials | Technicalstandardforproduct manufacturingandacceptance | |||||
| Valvebody | WCB | Design and manufacturing | |||||
| Valvecover | WCB | standard:GB/T12236 | |||||
| Valve clack | WCB | Press test standard:JB/T 9092 | |||||
| Applications | |||||||
| Features Simple structure,reliable action Use for preventing reverse flow of and convenient repair. the medium. | TechnicalParameters | 2.5MPa | |||||
| Nominal pressure | 1.6MPa | ||||||
| Casing test | 2.4MPa | 3.8MPa | |||||
| Sealing test | 1.8MPa | 2.8MPa | |||||
| Worktemperature | ≤200℃ Water,vapor and | ≤200℃ | |||||
| Applicable medium | oil products | Water,vapor and oil products | |||||
| H44H-16C (Product Code:3052) mainexternalsizeandconnectionsize | |||||||
| DN | L | H2 | n-Od | Quantity | Unit: mm Remark | ||
| 50 | 230 | D1 125 | 132 4-18 | (piece/case) 2 | |||
| 65 | 290 | 145 | 151 4-18 | 2 | |||
| 80 | 310 | 160 | 164 | 2 | |||
| · 100 | 350 | 180 | 185 | 1 | |||
| ·125 | 400 | 210 | 202 | 8-18 8-18 8-18 | 1 | ||
| ·150 | 480 | 340 | 223 | 8-22 | 1 | ||
| ·200 | 550 | 295 | 350 | 12-22 | 1 | ||
| ·250 | 670 | 355 | 400 | 12-26 | 1 | ||
| ·300 | 410 | 450 | 12-26 | 1 | |||
| ·350 | 700 | 470 | 495 | 16-26 | 1 | ||
| ·400 | 800 825 | 525 | 530 | 16-30 | 1 | ||
| H44H-25 (Product Code:3051) mainexternalsizeandconnectionsize | Unit: mm | ||||||
| DN | L | D1 | H2 | n-Od | Quantity (piece/case) | Remark | |
| 50 | 230 | 125 | 160 | 4-18 | 2 | ||
| 65 | 290 | 145 | 175 | 8-18 | 2 | ||
| 80 | 310 | 160 | 185 | 8-18 | 2 1 | ||
| 100 | 350 | 180 | 220 | 8-22 | 1 | ||
| 125 | 400 | 210 | 248 | 8-26 | |||
| 150 | 480 | 340 | 270 | 8-26 | 1 | ||
| ·200 | 550 | 295 | 350 | 12-26 | 1 | ||
| 250 | 670 | 355 | 400 | 12-30 | 1 | ||
| ·300 | 700 | 410 | 450 | 16-30 | 1 | ||
| ·350 | 800 | 470 | 495 | 16-33 | 1 | ||
| ·400 | 825 | 525 | 530 | 16-36 | 1 | ||
Note: Please note that the product specification or quotation with “" on the page is new.
Flange Lifting type check valves
Materials of mainparts and components and adopted standards:
| NameofMainParts | Materials | Technicalstandardforproduct manufacturingandacceptance |
| Valvebody | WCB | Design and manufacturing standard: GB/T12235 Pressteststandard:JB/T9092 |
| Valvecover | WCB | |
| Valveclack | WCB |
| Features | Applications | TechnicalParameters | ||
| Corrosion resistance,good anti-scratching performance Longservicelife | Useforpreventingreverse flowofthemedium. | Nominal pressure | 1.6MPa | 2.5MPa |
| Casing test | 2.4MPa | 3.8MPa | ||
| Sealing test | 1.8MPa | 2.8MPa | ||
| Worktemperature | ≤200℃ | ≤200℃ | ||
| Applicablemedium | Water,vaporand oilproducts | Water,vapor and oilproducts | ||
H41H-16C (Product Code:3061) main external size and connection size
| DN | L | D1 | H2 | pO-u | Quantity (piece/case) | Remark |
| 50 | 230 | 125 | 141 | 4-18 | 2 | |
| 65 | 290 | 145 | 161 | 4-18 | 1 | |
| 80 | 310 | 160 | 165 | 8-18 | 1 | |
| 100 | 350 | 180 | 185 | 8-18 | 1 | |
| 125 | 400 | 210 | 213 | 8-18 | 1 | |
| 150 | 480 | 240 | 232 | 8-22 | 1 | |
| 200 | 600 | 295 | 275 | 12-22 | 1 | |
| 250 | 622 | 355 | 316 | 12-26 | 1 | |
| 300 | 698 | 410 | 392 | 12-26 | 1 |
| DN | L | D1 | H2 | po-u | Quantity (piece/case) | Remark |
| 50 | 230 | 125 | 141 | 4-18 | 2 | |
| 65 | 290 | 145 | 161 | 8-18 | 1 | |
| 80 | 310 | 160 | 165 | 8-18 | 1 | |
| 100 | 350 | 190 | 185 | 8-22 | 1 | |
| 125 | 400 | 220 | 226 | 8-26 | 1 | |
| 150 | 480 | 250 | 248 | 8-26 | 1 | |
| 200 | 600 | 310 | 288 | 12-26 | 1 | |
| 250 | 622 | 370 | 325 | 12-30 | 1 | |
| 300 | 711 | 430 | 400 | 16-30 | 1 |
Note: Please note that the product specification or quotation with “●” on the page is new.
Considerations for use and operation of check valve seriesproducts:
| 1.Workprincipleandcharacteristics | 2.Storage,maintenance,installationanduse |
| 1.The checkvalve opensand closesvalve clackautomatically depending on theself flowingofthemedium topreventreverse flowofthemediumwhenstoppingthe pump. | 1.Thevalve should be store in dry and ventilated room; two ends of thevalvepassage should beblocked. |
| 2.Thevalvesforlong-termstorageshouldbeinspectedregularly toremove thedirt.Payattentiontocleanlinessof the sealing surface to prevent the damage of sealing ring. | |
| 2.The valve clacks adopt inclined design. Short closing timecanreducewater hammerpressure. | 3.Checkthevalvemarkcarefullybeforeinstallationandseewhetheritcomplieswith theuserequirements. |
| 4.Check the valve passage and sealing surface before installation.If there is dirt,use the cleaning cloth to wipe clean. | |
| 3.Thevalveclacksaremadeofoilresistant nitrilerubber andsteelplate throughhigh temperature pressing and features washing-outresistance,good sealing performanceandreliablesealing. ation of water hammer effect in pipes, pay attention to the pressure fluctuation of medium in the pipes. | 5.Payattention thattheflowdirectionmarkonthevalveshouldbeconsistentwiththemediumflowdirectionbefore installation. 6.The checkvalve should notbear weight in thepipeline.The large checkvalve should be supported separately so that |
| it is free from influence of pipe system. 7.During the use process,pay attention whether the valve has abnormal sound and vibration.In order to prevent gener- |
3.Possible failures, reasons and troubleshooting
| Nameofthecheck valvename | Possiblefailure | Reasonsoffailure | Troubleshooting |
| Flangecheckvalve | Thevalve clackscannot openorclose | 1.Thevalve rod has too close fit with thepin or foreignmatter blocks. | 1.Inspection the fit condition. |
| 2. Foreign body inside the valve blocks. | 2.Remove the foreign matters. | ||
| Thereisleakagebetweenthe connectionofvalvebodyand valvecover | 1.The connection bolt is not tightened evenly. | 1.Tighten evenly. | |
| 2. The flange sealing ring is damaged. | 2.Repair again. | ||
| 3.O-ring is damaged or fails. | 3.Replace theO-ring | ||
| The valve has large sound with vibration | 1. The valve is installed too closely to the pump. | 1.Replace or install to proper position. | |
| 2.The flowing pressure of the medium inside the pipe is not stable. | 2.Removepressure fluctuation. |
⊚ Flange Y Filter
Materialsof mainparts and components and adopted standards:
| NameofMainParts | Materials | Technicalstandardforproduct manufacturingandacceptance |
| Valvebody | WCB | Designandmanufacturing standard:GB/T14382 Press teststandard:JB/T9092 |
| Valvecover | WCB | |
| Filter screen | Stainlesssteel |
| Features | Applications | TechnicalParameters | ||
| Advanced structure,smallresis- tanceandconvenientblowdown | Applicabletopipewith nominalpressureis≤ 1.6/2.5MPaandcanfilter dirtandrustandother impurities in the medium. | Nominal pressure | 1.0MPa | 2.5MPa |
| Strengthtestpressure(water) | 2.4MPa | 3.8MPa | ||
| Worktemperature Applicable medium | ≤200℃ Water,vapor and oil | ≤200℃ Water,vapor and oil | ||
GL41-16C (Product Code:5032)main external size and connection size
Unit: mm
Unit: mm
| DN | L | D1 | n-Od | Quantity (piece/case) | Remark |
| 50 | 220 | 125 | 4-18 | 2 | |
| 65 | 250 | 145 | 4-18 | 2 | |
| 80 | 280 | 160 | 8-18 | 2 | |
| 100 | 310 | 180 | 8-18 | 1 | |
| 125 | 350 | 210 | 8-18 | 1 | |
| 150 | 380 | 240 | 8-22 | 1 | |
| 200 | 500 | 295 | 12-22 | 1 | |
| 250 | 550 | 355 | 12-26 | 1 | |
| 300 | 670 | 410 | 12-26 | 1 | |
| 350 | 700 | 470 | 16-26 | 1 | |
| 400 | 800 | 525 | 16-30 | 1 | |
| 450 | 825 | 585 | 20-30 | 1 | |
| 500 | 850 | 650 | 20-33 | 1 |
Note: Please note that the product specification or quotation with “●" on the page is new.
⊚ Flange check valves
Materialsof mainpartsand componentsand adoptedstandards:
| NameofMainParts | Materials | Technicalstandardforproduct manufacturingandacceptance |
| Valvebody | WCB | Designandmanufacturing standard:GB/T12235 Press teststandard:JB/T |
| Valvecover | WCB | |
| Valverod | Stainless steel | |
| Valveclack | Carbonsteel+stainlesssteel +hard alloy | |
| Valverodnut | Brass |
| Features | Applications | TechnicalParameters | ||||
| 1.Simple structure, convenientmanufactur- | Usedforopening and closing of | Nominal pressure | 1.6MPa | 2.5Mpa | 4.0Mpa | 6.4Mpa |
| ing and repair. 2.Smalloperating stroke water,steam and | Strength (water) testpressure | 2.4MPa | 3.8Mpa | 6.15Mpa | 9.75Mpa | |
| short closing and open- ing time,good sealing performance,smal oilproductspipes. frictionforcebetween | Sealing (water) test pressure | 1.8MPa | 2.8Mpa | 4.51Mpa | 7.15Mpa | |
| Worktemperature | ≤200℃ | ≤200℃ | ≤200℃ | ≤200℃ | ||
| sealing surfaces,long servicelife. | Applicable medium | Water,vapor and oilproducts | Water,vapor and oilproducts | Water,vapor and oilproducts | Water,vapor and oilproducts | |
J41H-16C(ProductCode:3122) main external size and connection size
Unit: mm
Unit: mm
| DN | L | D1 | H2 | pO-u | Quantity (piece/case) | Remark |
| 50 | 230 | 125 | 345 | 4-18 | 2 | |
| 65 | 290 | 145 | 372 | 4-18 | 2 | |
| 80 | 310 | 160 | 420 | 8-18 | 1 | |
| 100 | 350 | 180 | 471 | 8-18 | 1 | |
| 125 | 400 | 210 | 516 | 8-18 | 1 | |
| 150 | 480 | 240 | 572.5 | 8-22 | 1 | |
| 200 | 600 | 395 | 680 | 12-22 | 1 | |
| 250 | 622 | 355 | 771 | 12-26 | 1 | |
| 300 | 698 | 410 | 1028 | 12-26 | 1 |
Note:Please note that the product specification orquotation with on the page is new.
J41H-25 (Product Code:3121）main external size and connection size
Unit: mm
Unit: mm
| DN | L | D1 | H2 | pO-u | Quantity (piece/case) | Remark |
| 50 | 230 | 125 | 345 | 4-18 | 2 | |
| 65 | 290 | 145 | 372 | 8-18 | 2 | |
| 80 | 310 | 160 | 420 | 8-18 | 1 | |
| 100 | 350 | 190 | 471 | 8-22 | 1 | |
| 125 | 400 | 220 | 575 | 8-26 | 1 | |
| 150 | 480 | 250 | 647 | 8-26 | 1 | |
| 200 | 600 | 310 | 692 | 12-26 | 1 | |
| 250 | 622 | 370 | 799 | 12-30 | 1 | |
| 300 | 711 | 430 | 1033 | 16-30 | 1 |
Unit: mm
| DN | L | D1 | H2 | po-u | Quantity (piece/case) | Remark |
| 50 | 230 | 125 | 320 | 4-18 | 2 | |
| 65 | 290 | 145 | 360 | 8-18 | 2 | |
| 80 | 310 | 160 | 408 | 8-18 | 1 | |
| 100 | 350 | 190 | 459 | 8-22 | 1 | |
| 125 | 400 | 220 | 492 | 8-26 | 1 | |
| 150 | 480 | 250 | 562 | 8-26 | 1 | |
| 200 | 600 | 320 | 695 | 12-30 | 1 |
Unit: mm
| DN | L | D1 | H2 | pO-u | Quantity (piece/case) | Remark |
| 50 | 300 | 135 | 350 | 4-22 | 2 | |
| 65 | 340 | 160 | 398 | 8-22 | 2 | |
| 80 | 380 | 170 | 451 | 8-22 | 1 | |
| 100 | 430 | 200 | 514 | 8-26 | 1 | |
| 125 | 500 | 240 | 640 | 8-30 | 1 | |
| 150 | 550 | 280 | 772 | 8-33 | 1 | |
| 200 | 650 | 345 | 870 | 12-36 | 1 |
Note: Please note that the product specification or quotation with "on the page is new.
⊚ Flange ball valves
Materials of mainparts and components and adoptedstandards:
| NameofMainParts | Materials | Technicalstandardforproduct manufacturingandacceptance |
| Valvebody | WCB | Design and manufacturing standard:GB/T12237 Pressteststandard:JB/T9092 |
| Ballbodyandvalverod | tainlesssteel | |
| Sealingring | F4,Stainless steel +H |
| Features | Applications | TechnicalParameters | ||
| Goodsealing performance, quickopeningandclosing. Simplestructureand wideappli- cable scope. | Applicabletononcorrosive medium pipes such as water, steamandoilproductswith temperature≤20o°C. | Nominal pressure | 1.6Mpa | 2.5MPa |
| Strength(water)testpressure | 2.4Mpa | 3.8MPa | ||
| Sealing(water) testpressure | 1.8MPa | 2.8MPa | ||
| Worktemperature | ≤200℃ | ≤200℃ | ||
| Applicable medium | Water,vapor and oilproducts | Water,vaporand oilproducts | ||
Q41F-16C (Product Code:3202）main external size and connection size
Unit: mm
Unit: mm
| DN | L | D1 | H | po-u | Quantity (piece/case) | Remark |
| 50 | 200 | 125 | 140 | 4-18 | 2 | |
| 65 | 220 | 145 | 155 | 4-18 | 2 | |
| 80 | 241 | 160 | 182 | 8-18 | 2 | |
| 100 | 280 | 180 | 208 | 8-18 | 2 | |
| 125 | 320 | 210 | 249 | 8-18 | 1 | |
| 150 | 360 | 240 | 277 | 8-22 | 1 | |
| 200 | 400 | 295 | 328 | 12-22 | 1 | |
| 250 | 533 | 355 | 350 | 12-26 | 1 | |
| 300 | 580 | 400 | 395 | 12-26 | 1 |
Q41F-25 (Product Code:3201) main external size and connection size
Unit: mm
Unit: mm
| DN | L | D1 | H | n-Od | Quantity (piece/case) | Remark |
| 50 | 200 | 125 | 140 | 4-18 | 2 | |
| 65 | 220 | 145 | 155 | 8-18 | 2 | |
| 80 | 241 | 160 | 182 | 8-18 | 1 | |
| 100 | 280 | 190 | 208 | 8-22 | 1 | |
| 125 | 320 | 220 | 249 | 8-26 | 1 | |
| 150 | 360 | 250 | 277 | 8-26 | 1 | |
| 200 | 400 | 310 | 328 | 12-26 | 1 |
Note: Please note that the product specification or quotation with “●”on the page is new.
⊚ Flange expansion joint
Materials of main parts and components and adopted standards:
| NameofMainParts | Materials | Technicalstandardforproduct manufacturingandacceptance |
| Compensatorbody | WCB | |
| Compensatorsleeve | WCB | Designand manufacturing standard:GB/T12224 |
| Press ring | WCB | Pressteststandard:JB/T13927 |
| O-shapedring | EPDM |
| Features | Applications | TechnicalParameters | ||
| Reasonablestruc- ture,sealing,quick andconvenient installation. | Applicabletowatersupplyanddrainage pipes for petroleum,electric engineering， chemical engineering,medicine,light textile, papermaking and food,etc.It can stretch in axialdirection withincertainscope butalso overcomethedeviationproduceddueto connectionof thepipeswithdifferentshafts withcertainangle scope.Itis onlyused to dismantlethevalvesandlimittheposition withinstallationofboltsoastomakeit convenienttodismantleandinstallthevalve and pipes significantly. | Nominal pressure | 1.0Mpa | 1.6Mpa |
| Strength(water)testpressure | 1.5Mpa | 2.4Mpa | ||
| Worktemperature Applicable medium | ≤80℃ Water | ≤80℃ Water | ||
| DN | L | D1 | H | pO-u | Quantity (piece/case) | Remark |
| 200 | 275 | 280 | 340 | 8-22 | 1 | |
| 250 | 292 | 335 | 395 | 12-22 | 1 | |
| 300 | 308 | 395 | 445 | 12-22 | 1 | |
| 。 350 | 328 | 445 | 505 | 16-22 | 1 | |
| 400 | 345 | 495 | 565 | 16-26 | 1 | |
| 450 | 362 | 550 | 615 | 20-26 | 1 | |
| 500 | 380 | 600 | 670 | 20-26 | 1 | |
| 600 | 398 | 705 | 780 | 20-30 | 1 | |
| 700 | 420 | 810 | 895 | 24-30 | 1 | |
| 800 | 440 | 920 | 1015 | 24-33 | 1 | |
| 900 | 470 | 1020 | 1115 | 28-33 | 1 | |
| 1000 | 498 | 1120 | 1230 | 28-36 | 1 | |
| 1200 | 530 | 1340 | 1455 | 32-39 | 1 | |
| 1400 | 560 | 1560 | 1675 | 36-42 | 1 | |
| 1600 | 580 | 1760 | 1915 | 40-48 | 1 |
Note: Please note that the product specification or quotation with “”on the page is new.
