Air Set Pneumatic Single Seat Control Valve

Product Details
Customization: Available
Temperature: Ordinary Temperature
Certification: GS, RoHS, CE, ISO9001
Gold Member Since 2020

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Number of Employees
66
Year of Establishment
2009-01-12
  • Air Set Pneumatic Single Seat Control Valve
  • Air Set Pneumatic Single Seat Control Valve
  • Air Set Pneumatic Single Seat Control Valve
  • Air Set Pneumatic Single Seat Control Valve
  • Air Set Pneumatic Single Seat Control Valve
  • Air Set Pneumatic Single Seat Control Valve
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Basic Info.

Model NO.
ZJHP
Standard
Standard
Connection Mode
Flange
Power
Pneumatic
Material
Stainless Steel
Type
Sleeve
Transport Package
Plywood Case
Specification
DN50-DN600
Trademark
HUIZHENG
Origin
China
HS Code
8481804090
Production Capacity
50000pieces/Year

Product Description

Air Set Pneumatic Single Seat Control Valve

Air Set Pneumatic Single Seat Control Valve
Product Introduction


ZJHP pneumatic flow control valve is a small pneumatic single seat control valve, comprehensive development of advanced technology at home and abroad. The valve body is single seat valve, double seat, sleeve seat. And it is the development direction of today's control valve.
ZJHP pneumatic flow control valve is composed of multi - spring pneumatic diaphragm actuator and top - guided through away low flow resistance single - seat valve. It has the advantages of compact structure, light weight, sensitive action, S-streamline fluid channel, small pressure drop loss, large valve capacity, accurate flow characteristics. It is equipped with electric-air positioner or pneumatic positioner which can realize the automatic regulation and control of the process. The valve is widely used in the precise control of gas, liquid, steam in pressure, flow, temperature, liquid level and other parameters to maintain a given value. If there is no air source at the site, electric actuator could be replaced.


Technical Parameters
 
Body type Straight type casting body
Nominal diameter DN20~300mm
Nominal pressure PN 1.6, 2.5, 4.0, 6.4, 10.0 MPa
Flange standard GB/T9113, JB/T79, HG20594
Connection type Flange(FF, RF, RTJ), Welding(SW, BW), Screw(suitable in 1")
Bonnet type High temperature type +250~+450ºC, Ultra high temperature type+250~+560ºC
Gland type Bolted compression type
Packing V type PTFE, containing impregnated PTFE asbestos, asbestos textile, graphite
Main parameter Power supply voltage: 220V/50Hz, input signal: 4-20mA or 1-5V·DC, output signal: 4-20mA·DC
Protection grade: IP55, flameproof mark: EXDIIBT4, hand function: handle
Ambient temperature: -25 ~ +70ºC, ambient humidity: ≤95%


Base Material
  
Valve body, bonnet HT200, ZG230-450 ZG1Cr18Ni9Ti
Valve disc, seat 1Cr18Ni9Ti, surfacing of Stellite alloy
Soft seal disc reinforced polytetrafluoroethylene
Packing PTFE, flexible graphite
Corrugated tube 1Cr18Ni9Ti
Gasket rubber asbestos board, 10, 1Cr18Ni9Ti, asbestos spiral wound gasket
Diaphragm cover A3
Corrugated diaphragm nitrile rubber clip reinforced polyester fabric
Spring 60Si2Mn
Stem, push rod 2Cr13, 1Cr18Ni9Ti
Bushing 2Cr13

Feature
 

1. ZJHP pneumatic flow control valve is the implementation unit of the instrument in the automatic control system with electric-gas valve positioner driven by electric signals and compressed air. It accepts the input 0-10mA DC or 4-20mA DC current signal and the compressed air will be converted into air source pressure signal input and output by the regulator. It can realize the division control (segment amplitude signal) to change the valve opening and achieve the precise control of the process parameters.
2. ZJHP pneumatic flow control valve can be divided by direct action and reverse action according to the mode of action. Direct action: Air to closed-Failed to open, when the pressure signal increases, the valve closed. Reverse action: Air to open-Failed to closed, when the pressure signal increases, the valve open.
3. ZJHP pneumatic flow control valve is straight single seat casting valve with single plunger type disc, especially suitable for small leakage and small pressure difference.
4. The control valve is straight through with low flow resistance, top guide and no bottom bonnet. The valve is composed of seat and plug type disc. It has a good sealing, small leakage, quick action, s-shaped streamlined, small pressure drop loss, large capacity, precise flow characteristic, large adjust rang. The guide area of disc is large to strong ant-vibration. It is applicable to strict requirements of the medium leakage and regulation accuracy. Due to the valve structure, the unbalance force on the stem is larger in the big nominal diameter. So the valve is only suitable for the small pressure difference.
5. Different spool shapes will get different flow characteristics such as percentage (logarithmic), linear,  quick opening.
6. The valve spool can be designed and made into according to the requirements of working conditions. And the soft sealing structure is suitable for -20~+120ºC temperature requires strict tightness of acid and alkali, gas.


Actuator
Air Set Pneumatic Single Seat Control Valve

Actuator ZHA/B Multi-spring diaphragm actuator
Model ZHA/B-22 ZHA/B-23 ZHA/B-34 ZHA/B-45 ZHA/B-56
Effective area(cm2) 350 350 560 900 1400
Stroke(mm) 10,16 24 40 40,60 100
Spring range(KPa) 20~10, 20-60, 60-100, 40-200, 80-240
Diaphragm material Nitrile rubber and nylon cloth, ethylene propylene rubber and nylon cloth
Air supply 140~400KPa
Air connetction RC1/4"
Ambient temperature -30~+70ºC
Accessories Positioner, air filter pressure reducer, position valve, travel switch, valve position transmitter, handwheel mechanism, etc.
Acting Air close(B)-fail to close(FO), air open(K)-fail to close(FC)


Technical parameters

 
DN (mm )
(dn)
20 25 32 40 50 65 80 100 125 150 200
(10) (12) (15) (20)
Kv Liner 1.8 2.8 4.4 6.9 11 17.6 27.5 44 69 110 176 275 440 690
Percentage 1.6 2.5 4.0 6.3 10 16 25 40 63 100 160 250 400 630
Rated stroke L (mm) 16 25 40 60
Diaphragm effective area Ae (cm2 ) 280 400 600 1000
Signal range Pr (kPa) 20 ~ 100 , 40 ~ 200
Air pressure Ps (MPa) 0.14 ~ 0.4
Flow characteristics Straight line, equal percentage
Adjustable ratio 50
Allowable leakage Hard sealing: IV  soft sealing: VI 
PN(MPa) 1.0 , 1.6 , 4.0 , 6.4
Working temperature t
( ºC )
Normal -20 ~ 200 , -40 ~ 250 , -60 ~ 250
Cooling -40 ~ 450 , -60 ~ 450
High 450 ~ 560
Low -60 ~ -100 , -100 ~ -200 , -200 ~ -250

Performance indicators
 
Project Value Project Value
Intrinsic error% No positioner ±5.0 Zero deviation % Air close No positioner
 
Beginning ±5.0
With positioner ±1.0 Ending ±2.5
Hysteresis error% No positioner ≤3.0 With positioner Beginning ±1.0
Ending ±1.0
With positioner ≤1.0 Air open No positioner
 
Beginning ±2.5
Ending ±5.0
Dead band% No positioner ≤3.0 With positioner Beginning ±1.0
Ending ±1.0
With positioner ≤0.4 Allowable leakage L/h 1×10-4×capacity
Rated stroke deviation% ±2.5

Details and dimensions and weight

Air Set Pneumatic Single Seat Control Valve
     
DN L H H1 Weight(kg) φA
PN16 PN40 PN64 Normal High T PN6 PN16 PN40 PN64 PN6
PN16
PN40
PN64
20 180 194 206 398 548 45 52 65 19 23 285
25 185 197 210 410 560 50 57 70 20 24
40 222 235 251 455 620 65 75 85 26 35
50 254 267 286 457 627 70 82 90 30 40
65 276 292 311 610 790 80 92 100 47 66 360
80 298 317 337 622 807 95 100 107 55 78
100 352 368 394 640 850 105 110 117 125 65 99
150 451 473 508 870 1130 132 142 150 172 130 160 470
200 600 650 890 1150 160 170 187 207 175 250
250 730 775 1203 1523 187 202 225 235 350 470 580
300 850 900 1234 1554 220 230 257 265 500 660
         
 
Connection dimensions and standards

Flange standard: Cast iron is GB4216-86 Cast steel is GB9113-88, JB/T79-94
Flange seal standard: PN10, PN16 is RF, PN40,PN64 is FM, the body is M
Structural length standard: GB12221-89
Connection of actuator air signal: Internal thread M10×1
The flange and distance of flange end face can be manufactured according to the standard specified by the user. Such as ANSI, JIS, DIN standard.


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Company development

Air Set Pneumatic Single Seat Control Valve
Air Set Pneumatic Single Seat Control Valve

Certifications

Air Set Pneumatic Single Seat Control Valve
Air Set Pneumatic Single Seat Control Valve
Company Show

Air Set Pneumatic Single Seat Control Valve
FAQ:

1. Are you trading company or factory?
We are factory in Yongjia, Wenzhou, China.
2. Are the prodcuts certified?
Yes, ISO, FDA, SIL 2, CE, LFGB and so on.
3. Delivery time?
7-15 working days usually, but it will be longer when peak season.
4. MOQ?
One set.

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