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Flange expansion joint
Materials of main parts and components and adopted standards:
| Nameofmainparts | Materials | Technicalstandardforproduct manufacturingand acceptance |
| Compensatorbody | WCB | Design and manufacturing standard:GB/T 12224 Pressteststandard:JB/T13927 |
| Compensatorsleeve | WCB | |
| Press ring | WCB | |
| O-shaped ring | EPDM | |
| Characteristics | Purpose | Technicalparameters | ||
| Reasonablestructure, sealing,quickand convenientinstallation. | Applicable to water supply and drainage pipes for petroleum, electric engineering chemical engineering,medicine, light textile,paper making and food,etc.It can stretch in axial direction within certain scope but also overcome the deviation produced due to connection of the pipes with different shafts with certain angle scope.It is only used to dismantle the valves and limit the position with installation of bolt so as to make it convenient to dismantle and install the valve and pipes significantly. | Nominalpressure | 1.0Mpa | 1.6Mpa |
| Strength(water) testpressure | 1.5Mpa | 2.4Mpa | ||
| Worktemperature Applicablemedium | ≤80℃ water | ≤80℃ water | ||
SSO-1-10C (Product Code: 9031)|main external size and connection size
| DN | D1 | H | n-0d | 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 | 530 560 | 1340 | 1455 | 32-39 | 1 | |
| 1400 | 1560 | 1675 | 36-42 | 1 | ||
| 1600 | 580 | 1760 | 1915 | 40-48 | 1 |
SSQ-1-16C (Product Code:9032)|main external size and connection size
| DN | D1 | n-0d | Quantity(piece/case) | Remark | ||
| 200 | 275 | 295 | 340 | 12-22 | 1 | |
| 250 | 292 | 355 | 395 | 12-26 | 1 | |
| 300 | 308 | 410 | 445 | 12-26 | 1 | |
| 350 | 328 | 470 | 505 | 16-26 | 1 | |
| 400 | 345 | 525 | 565 | 16-30 | 1 | |
| 450 | 362 | 585 | 615 | 20-30 | 1 | |
| 500 | 380 | 650 | 670 | 20-33 | 1 | |
| 600 | 398 | 770 | 780 | 20-36 | 1 | |
| 700 | 420 | 840 | 895 | 24-36 | 1 | |
| 800 | 440 | 950 | 1015 | 24-39 | 1 | |
| 900 | 470 | 1050 | 1115 | 28-39 | 1 | |
| 1000 | 498 | 1170 | 1230 | 28-42 | 1 | |
| 1200 | 530 | 1390 | 1455 | 32-48 | 1 | |
| 1400 | 560 | 1590 | 1675 | 36-48 | 1 | |
| 1600 | 580 | 1820 | 1915 | 40-55 | 1 |
Method of type designation
1、 Valve type code:
| Valvetype | Code | Valvetype | Code | Valvetype | Code | Valvetype | Code |
| Spring load safetyvalve | A | Cut-offvalveand bottomvalve | H | Ballvalve | Q | Pressurereliefvalve | Y |
| Butterflyvalve | D | Cut-offvalve | Steamtrap | S | Gatevalve | Z | |
| Diaphragmvalve | G | Throttlevalve | L | Plungervalves | U | ||
| Leversafetyvalve | GA | Blow-downvalve | P | Plugvalve |
2、Transmission mode code:
| Transmission mode | Code | Transmission mode | Code | Transmission mode | Code | Transmission mode | Code |
| Electromagnetic drive | 0 | Gear worm | 3 | Pneumatic | の | Electricdrive | 9 |
| Electromagnetic- hydraulicdrive | 1 | Spurgear | 4 | Hydraulic | 7 | Handwheeldirectconnection | |
| Electric-hydraulic drive | 2 | Bevelgear | 5 | Pneumatic- hydraulicdrive | 8 | Connectedwithvalverodfor operation. | Omitted |
3、 Connection mode code:
| Connection mode | Code | Connection mode | Code | Connection mode | Code | Connection mode | Code |
| Femalethread | 1 | Flange type | Wafertype | 7 | Cutting sleeve | 9 | |
| Malethread | 2 | Weldingtype | 6 | Hoop | 8 |
4、 Material code of sealing surface or lining
Whenthematerialsofsealingsurfaceof thesealedauxiliaryaredifferent,it isexpressedwithmaterialsof lowhardnessexceptdiaphragmvalves.
| Material | Code | Material | Code | Material | Code | Material | Code |
| Tin-basebearing alloy (babbit alloy) | B | Cr13series stainlesssteel | H | Lining lead | Q | Hard alloy | Y |
| Porcelainenamel | C | Rubberlining | Austeniticstainless steel | R | Thebody | W | |
| Carburizing steel | D | Monel alloy | M | Plastic | S | Thediaphragmvalveisexpressed withthecodeofsurfacematerials | |
| Fuoroplastics | F | Nylonplastic | N | Copperalloy | T | ||
| Ceramic | G | Boronizedsteel | P | Rubber | X | ofthevalvebody |
5. Pressure code
5.1. According to the standard of GB/ T 1048, it is indicated with 10 times of Megapascal ( MPa) value. For example, it is expressed with 16 for 1.6Mpa.
5.2. When the medium temperature exceeds 425°C , the work pressure code under the maximum work temperature is indicated. If the work pressure is 17Mpa with work temperature 500 °C , it is expressed with P50 170.
6. Valve body materials code
| Valvebody material | Code | Valvebody material | Code | Valvebody material | Code | Valvebody material | Code |
| Carbonsteel | C | Aluminumalloy | L | Plastic | S | Graycastiron | Z |
| Cr13seriesstainless steel. | H | Chromemolybdenum Oseriessteel | P | Copperandcopperalloy | T | Note: CF3,CF8,CF3M,CF8Mand | |
| Chromemolybdenum seriessteel | Nodular castiron | O | Titaniumandtitanium alloy | T1 | othermaterial | ||
| Malleablezinc-iron | K | Nickelchromium molybdenumseries stainlesssteel | R | Chrominm-molybdenum -vanadiumsteel | designationcanbelabeledonthe valvebodydirectly. | ||
