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.

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 connection 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

Main parts material

1.Body

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

Nominal diameter: DN20~300mm     Nominal pressure:PN1.6   4.0  6.4MPa

Connection:flange acc.to GB、JB、HG; G3/4 acc.to screw of G3/4

Material: carbon steel (WCB), SS304(ZG1Cr18Ni9), SS316(ZGOCr18Ni12Mo2Ti)

Upper cover:normal temperature:-40~+200℃ heat sink type: -60~+450℃  bellows seal type

Packing : PTFE,flexible 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

Table:ZJHP(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(cm) 220 350 560 900 1400
Natural flow feature Linear, equal percentage
Inherent adjustable 50:1
nominal pressure (Mpa) 0.6、1.0、1.6、2.5、4.0、6.4(ANSⅠ125、150、300、600Lb)(JIS10、16、20、30、40K)
Operated Temperature ℃ -20~+200、-40~+250、-40~+450、-60~+450
Ambient temperature ℃ -40~+85
Air pressure Mpa 0.14(0.25、0.4)
Spring range Kpa 20~100(40~200、80~240、20~60、60~100)
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.

DN

(mm)

L(mm) 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

 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

Related Products

Scroll to Top

Get a Quick Quote!

x