ZJHP Pneumatic Single Seat Control Valve

pneumatic single-seat (sleeve,double-seat) control valve is composed of ZHA(B) pneumatic multi-diaphragm actuator, P style low flow resistance straight single-seat valve, low resistance sleeve valve and N type low resistance double-seat valve. Low resistance single-seat valve and sleeve valve has simple and compact structure and high flow coefficient. Forms of bodies adopts straight single-seat

Product Description

 ZJHP pneumatic single-seat (sleeve,double-seat) control valve is composed of ZHA(B) pneumatic multi-diaphragm actuator, P style low flow resistance straight single-seat valve, low resistance sleeve valve and N type low resistance double-seat valve.

Low resistance single-seat valve and sleeve valve has simple and compact structure and high flow coefficient. Forms of bodies adopts straight single-seat and the upper guiding structure without bottom cover, and the feature is small volume,light weight,fluent runner and high efficient.The connetion of body and pipe adopts male flange and male-female flange,which adapts different nominal diameter. Body is classified into ordinary temperature and middle temperature for different working temperatures. Plug type of single-seat valve is on oriented piston valve. Plug type of sleeve valve is cylinder, which is guided by inner cylinder and a certain characteristic hole on the sleeve after precision finishing.They all have accurate flow characteristic and conform to IEC standard and slope deviation requirements in national regulation. The standard filling material is PTFE,but flexible graphite can be also used according to field usage


Technical Parameter

Main parts material

1.Body

Type: straight single-seat (sleeve, double-seat)

Nominal diameter: DN20300mm     Nominal pressurePN1.6   4.0  6.4MPa

Connectionflange acc.to GBJBHGG3/4 acc.to screw of G3/4

Material: carbon steel (WCB, SS304ZG1Cr18Ni9, SS316ZGOCr18Ni12Mo2Ti

Upper covernormal temperature:40~+200℃ heat sink type: 60~+450℃  bellows seal type

Packing : PTFEflexible graphite

2.Trim

Plug: upper guided single-seat (sleeve)      Diaphragm: NBR with reinforced dacron

Compress spring: 60Si2Mn

Push rod: 2Cr13       diaphragm cover: A3          bush: 2Cr13   

Gasket:  SS & flexible graphite spirotallic gasket,  PTFE


 Specification and Technical parameters

TableZJHP(M) pneumatic control valve

DN(mm)

G3/4”

20

25

40

50

65

80

100

150

200

250

300

Seat diameter(mm)

3 4 5 6 7 8

10

12

15

20

20

25

25

32

40

32

40

50

40

50

65

50

65

80

65

80

100

100

125

150

125

150

200

250

300

Rated flow

linear

0.08 0.12 0.2 0.32 0.5 0.8

1.8

2.8

4.4

5.9

6.9

 

11

11

17.6

27.5

17.6

27.5

44

27.5

44

69

44

69

110

69

110

176

176

275

440

275

440

690

1000

1600

Equal percentage

1.6

2.5

4

6.3

6.3

10

10

16

25

16

25

40

25

40

63

40

63

100

63

100

160

160

250

400

250

400

630

900

1440

Rated travel(mm)

10

16

25

40

60

100

Membrane effective area(cm2 )

220

350

560

900

1400

Natural flow feature

Linear, equal percentage

Inherent adjustable

501

nominal pressure (Mpa)

0.61.01.62.54.06.4ANSⅠ125150300600Lb(JIS1016203040K)

Operated Temperature ℃

-20~+200-40~+250-40~+450-60~+450

Ambient temperature ℃

-40~+85

Air pressure Mpa

0.140.250.4

Spring range Kpa

20~10040~20080~24020~6060~100

Over size

Inside screwM10*1

Notice: When ordering the control valve with special requirements such as low temperature type, sylphon seal type, heating jacket type etc. , please illustrate.


Dimension


DN

(mm)

Lmm

H(mm)

H1(mm)

φA

(mm)

PN1.6~PN4.0

PN6.4

Normal

High temp

PN16

PN40

PN64


G3/4

118

120

253


31


285

20

181

230

415

565

52.5

65

285

25

184

230

422

572

57.5

70

32

200

260

450

600

75

85

40

222

260

454

604

75

85

50

254

300

460

610

82.5

90

65

276

340

595

775

92.5

102.5

360

80

298

380

612

792

100

107.5

100

352

430

645

825

110

117.5

125

125

400

500

760

960

125

135

147.5

470

150

451

550

793

993

142.5

150

172.5

200

495

650

880

1080

170

187.5

207.5

250

622

775

1180

1430

202.5

225

235

585

300

698

900

1230

1480

230

257.5

265


How to order

 Ordering Note

1. Model  

2. Nominal diameter, seat diameter    

3. Rated flow coefficient   

4. Nominal pressure and flange type  

5. Working temperature

6. Acting form: open air or close air

7. Natural Flow feature

8. Body and valve components material

9. Accessory: positioner, pressure reducer, hand wheel


Video


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