Product Detail
BZHP Pneumatic Single-seat Control Valve
BZHP Pneumatic Single-seat Control Valve
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Product Details

      Overview

Pneumatic direct control valve,Suitable for precision fluid adjustment of working conditions

According to the body structure can be divided into: pneumatic single-seat control valve,pneumatic double-seat control valve,pneumatic sleeve control valve

Pneumatic Single-seat Control valve leakage is extremely small,

but it can withstand Differential pressure is also smaller.

pneumatic double-seat control valve leakage is slightly larger,

but it can withstand Differential pressure is larger. The price is slightly expensive.

Pneumatic sleeve valve combines the advantages of the above two control valve,,Leakage rate samller than double-seat control valve,But it can withstand the Differential pressure is greater than the single-seat valve,It is an ideal choice.But the price is slightly more expensive than the first two.

   

The control section of regulating valve general choose BZH series pneumatic diaphragm actuator

BZH series pneumatic diaphragm actuatorIt is a multi-spring single function linear actuator,It has small size, light weight, easy operation and maintenance, etc. BZH series pneumatic diaphragm actuator change input pressure of pneumatic control instruments into a push rod displacement,You can adjust the valve spool is moved to a position corresponding to the input signal.This actuator is multi-spring type ,Its compact structure, large output force.

According to user requirements, can be equipped with positioner, Air filter pressure reducer, limit switches, hand wheel, the solenoid valve ect.

      Control valve parameters

Body material: cast iron, cast steel, cast stainless steel, etc.

Pressure Level:1.6MPa、4.0MPa、6.4MPa

Connection: flange connection according to JB79-59

Temperature range: room temperature -20 ℃ ~ + 230 ℃   thermal fin type -60 ℃ ~ + 450 ℃

Action form: Positive action (air-to-close) or Counteraction ( air to open)

Flow characteristics: equal percentages, linear

Leakage quantity: single seat valve: 0.01% × rated Kv

                Double seat valve, sleeve valve: 0.5% × rated Kv

    Actuator parameters

Refer to this brochure "Valve Actuator" section.

       Features

· A combination of BZH series pneumatic diaphragm actuator with single-seat control valve

· This Series Actuator which install with Pneumatic single-seat control valve,

   Small size, light weight, easy equipment.

· Single-seat control valve 's structure Compact, reliable sealing.

· Quick action ,a small amount of leakage, flow characteristics of precision, wide adjustable range

· According to user requirements, can be equipped with positioner, Air filter pressure reducer, limit switches, hand wheel, the solenoid valve ect.

Specification parameter Table

Nominal diameter

DN

20

25

32

40

50

65

80

100

125

150

200

250

300

Valve core diameter(mm)

10

12

15

20

25

32

40

50

65

80

100

125

150

200

250

300

Rated flow coefficient Kv

1.2

2

3.2

5

8

12

20

32

50

80

120

200

280

450

700

1100

Nominal pressure

PN

MPa

1.6         4.0         6.4

With BZH pneumatic actuator

BZHA/B-11

BZHA/B-22

BZHA/B-23

BZHA/B-34

BZHA/B-45

BZHA/B-56

Reted travel

(mm)

10

16

25

40

60

100

Flow characteristics

Equal percentage         Linear

Mode of action

Air to open           Air to close

temperature range

-20℃~+230℃          -60℃~+450℃

Note:Large diameter single-seat control valve can be customized according to user requirements

About Actuator Description,Please refer to the sample "Valve Actuator" section.


Overall dimensions Chart

           QQ图片20190409101134.jpg

Normal

Diameter

DN

20

25

32

40

50

65

80

100

125

150

200

250

300

L

1.6MPa

181

184

184

222

254

276

298

352

415

451

600

650

740

4.0MPa

194

197

197

235

267

292

317

368

425

473

610

670

770

6.4MPa

206

210

210

251

286

311

337

394

435

508

650

690

800

H

Normal temperature

381

445

451

563

578

624

627

631

756

764

803

1039

1064

Thermal Fin Type

517

581

587

691

706

787

790

794

953

961

1000

1235

1259

φA

236

285

285

360

470

620

Note:Large diameter single-seat control valve can be customized according to user requirements


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