1701型气动隔膜调节阀

99

Product

BAIC GROUP

1701 Type Pneumatic Diaphragm Regulator

Model 1701 pneumatic membrane, piston diaphragm control valve (referred to as pneumatic diaphragm valve)

adopts the sealing between diaphragm and valve body with \"mountain\"-shaped protruding surface, which is

isolated from the outside (without packing box), and the valve body has a simple flow path, smooth, and can be

covered with anti-corrosion layer, which is especially suitable for corrosion-resistant and highly toxic occasions.

The nominal pressure level of this series of products are 0.6. 1.0MPa, valve body caliber range from 20 to

200mm, the applicable temperature range of 150 ℃ or less, the leakage is zero or Class VI.

In the same working conditions, recommanded to select fluorine-lining regulator.

Characteristics

· 1701 type utilizes a multi-spring actuator that reduces height and weight by 30%.

· Valve body surface has a variety of materials coating layer, to avoid direct contact

with the medium, to withstand the corrosion of strong corrosive media.

· Particularly suitable for the regulation of highly toxic media or where contamination

of environmental hygiene is not permitted.

· Simple flow path, low resistance, rated flow coefficient is larger than the same

diameter single-seat or sleeve regulator.

Main parts materials

Valve body: HT200, ZG230～450 or lined with the above materials

Diaphragm: Butyl rubber, natural rubber, PTFE

Bonnet: ZG230～450

Corrugated membrane: Nitrile rubber sandwich reinforced polyester fabric

Spring: 60Si2Mn

1. Piston 2. O-shape seal ring 3. Cylinder 4. Spring

Regulator piston actuator component diagram

100

Product

BAIC GROUP

Membrane material and application range

Diaphragm material Service temperature ℃ Applicable medium

Butyl rubber (Grade B) —40～+100

Most inorganic acids such as: sulfuric acid, hydrofluoric acid,

phosphoric acid, etc. are applicable, good corrosion resistance, and

at the same time applicable to a variety of alkalis and salts

Natural rubber (Grade Q) -50～+100 Mainly used for purified water, inorganic salts and dilute mineral acid

media

PTFE —20～+150 Excellent chemical stability, resistant to corrosion of strong acids,

concentrated alkalis and strong oxidizers.

Outline dimensions and weight

Nominal diameter

DN (mm) L A H1 H G(Kg)

20 150 280 52.5 400 21

25 160 280 57.5 408 23.5

32 180 280 67.5 418 28

40 200 308 75 464 33.5

50 230 308 82.5 487 38

65 290 395 90 520 65

80 310 395 100 530 73

100 350 395 110 550 94

125 400 500 135 575 160

150 480 500 150 590 195

200 600 500 190 630 290

Unit: mm

101

Product

BAIC GROUP

Specifications and technical parameters

Nominal diameter DN(mm) 20 25 32 40 50 65 80 100 125 150 200

Rated flow

coefficient Kv

Unlined 9.8 19 32 48 63 108 158 270 360 518 1114

Lined 7.8 17 28 41 55 87 127 240 311 415 1121

Rated stroke L(mm) 810 12 16 24 30 34 36 44 55 65

Effective membrane area Ae

(cm²) 280 400 600 1000

Piston diameter (mm) 100 125 160 250

Allowable

differential

pressure

(MPa)

P2=0 1.0 0.8 0.8 0.6 0.4 0.4 0.2 0.1 0.2 0.15 0.08

P1=P2 0.9 0.4 0.4 0.3 0.2 0.2 0.1 0.05 0.09 0.07 0.04

Nominal pressure PN(MPa) 0.61.0

Intrinsic flow characteristics Approximate equal percentage

Operating temperature (℃) ≤150

Signal range Pr (KPa) 20～100, 40～200, 400～600

Allowable leakage amount Zero or Class VI leakage amount within the allowable differential pressure range

The actuators listed in the table are standard configurations and can be optionsl according to

process requirements.

102

Product

BAIC GROUP

Connection dimensions and standards

· Flanges according to GB/T9113-2000 (default standard). Also can be according to JB/T79.1-94, JB/

T79.2-94, or HG20592~HG20635-2009.

· Flange sealing surface type: PN16 is convex flange, PN25 is convex flange, PN40, PN64(63) are

concave-convex flanges, and the valve body is concave flange.

· Flange end surface distance according to GB/T12221-2005 (other standards must be specified).

· Welding connection groove according to: GB/T12224-2005.

· Actuator air signal interface: internal thread M10 × 1 (DN ≤ 100), internal thread M16 × 1.5 (DN> 100).

· Distance between valve body flange and flange end surface can be manufactured according to user

specified standards, such as ANSI, JIS, DIN, etc.

Ordering information

When ordering, users are requested to provide the following materials

· Regulator name, model and purpose.

· Nominal diameter (mm), nominal pressure (MPa), operating temperature and range.

· Upstream pressure, downstream pressure.

· Media name and status, media flow rate.

· Bonnet type.

· Whole machine action mode (air-to-open or air-to-close), instrument air (air source pressure).

· Material requirements for valve body and valve internal parts.

· Accessory requirements:

Electro-pneumatic valve positioners, air filter decompressor, solenoid valve, holding valve, valve

position transmitters, (top-mounted) handwheels, etc.

· Valve body flange standards.

· Valve body structure length (flange surface distance L).

· Other special requirements (e.g., corrosion resistance requirements, explosion-proof level

requirements, leakage level limitation requirements, etc.).

Technical parameters are subject to change without notice!