Product Detail
BZHN Pneumatic Double-seat Control Valve
BZHN Pneumatic Double-seat Control Valve
Original : 0.00
Product Details

Product Features

· Combination of BZH series Pneumatic diaphragm actuator and double seat control valve.

·This series pneumatic double seat control valve 's actuators

  with small size, light weight, easy installation and maintenance.。

· Double seat control valve has upper and lower valve spool,Fluid in the upper and lower thrust on the spool,Its opposite direction and close in size,Unbalanced force is small,It can withstand greater pressure.

· Small flow resistance, rated flow coefficient is large than the same size single-seat control valve.

· Reliable action, Bear a large Differential pressure, 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.

Specification Table

Nominal

diameter DN

25

32

40

50

65

80

100

125

150

200

250

300

Rated flow coefficient Kv

10

16

25

40

63

100

160

250

400

630

1000

1600

Nominal

pressure PN

MPa

1.6     4.0      6.4

With BZH Type pneumatic actuator

BZHA/B-22

BZHA/B-23

BZHA/B-34

BZHA/B-45

BZHA/B-56

Rated travel

(mm)

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: The large-diameter double seat control valve can be customized according to user requirements.


About descripment of actuator,see "Valve Actuator" section.


Overall dimensions Chart

      aa.jpg

Normal Diameter   

DN

25

32

40

50

65

80

100

125

150

200

250

300

L

1.6MPa

185

200

220

250

275

300

350

410

450

550

670

770

4.0MPa

190

210

230

255

285

310

355

425

460

560

740

803

6.4MPa

200

210

235

265

295

320

370

440

475

570

750

819

H

Normal temperature Type

450

453

573

578

634

644

656

781

791

833

1443

1519

Thermal Fin Type

586

589

701

706

797

807

819

978

988

1030

1745

1765

φA

285

285

360

470

620

Note: The large-diameter double seat control valve can be customized according to user requirements.


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Address :   No. 11, Longhuai Road, Shuangjiang Street, Shuangyuan Economic Development Zone, Beichen District, Tianjin, China

Tel :   86-22-27553780       Fax :   86-22-27529983      E-mail :   FW@bellaut.com