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ZJHP fine small pneumatic control valve

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Overview of ZJHP single seat pneumatic control valve
ZJHP series of films through single seat pneumatic control valve driven by the top structure, equipped with multi spring actuator. Has the advantages of compact structure, light weight, flexible action, fluid channel was streamlined, advantages of the 3 small pressure drop loss, valve capacity, flow characteristics of precision, convenient assembly and disassembly etc.. Widely used for precise control of gases, liquids and other media, the process parameters such as pressure, flow, temperature, liquid level remains in the given value. In particular the workplace to allow leakage star small valve and pressure.
This series of products are the standard type, adjust the cut-off valve, bellows seal type, jacket type insulation and other varieties. Nominal grade products are PN10, 16, 40, 64; body diameter range of DN20~300. Application of fluid temperature from -196 ℃ ~+560 ℃ range of different grades. Leakage star standard with IV or VI. Flow characteristics such as linear or percentage. A variety of different specifications can be selected.

Characteristics of ZJHP single seat pneumatic control valve
1 Top oriented single seat control valve, compact structure, few components, Yi Weixiu.
The 2 metal spool for a variety of occasions, as IV level leakage standard, structure of soft seal spool up to VI level leakage standard.
3 valve according to the principle of fluid mechanics design into a uniform low resistance flow, rated flow coefficient of 30%. Big adjustable range, inherent adjustable ratio 50:1. Implementing agencies for the use of multi spring structure, height reduction of 30%. , weight 30%.
4.ZJHPW shaped bellows seal valve, the stem form of mobile complete sealing, blocking the fluid leakage. With an insulating jacket type ZJHPJ valve, used for fluid cooling crystallization, solidification clogging situation.

Materials of main parts


NameTexture of material
The valve body valve coverZG230-450、ZG0Cr18Ni9
Valve seat0Cr18Ni9, 0Cr18Ni9+PTFE, 0Cr18Ni9+ division Chatterley
FillerPTFE, flexible graphite
Corrugated0Cr18Ni9
ShimGraphite spiral wound gasket (V6590), F4
Film coverA3、0Cr18Ni9
Corrugated diaphragmClip reinforced nylon fabric nitrile rubber
Spring60Si2Mn
Valve push rod0Cr18Ni9、2cr13


The main technical parameters of single seat valve

DN20253240506580100125150200250300

Seat diameter mm10121520253240506580100125150200250300

Rated kvLinear1.82.84.46.91117.627.5446911017627544069010001600

The percentage of1.62.54.06.310162540631001602504006309001440

Nominal pressure(MPa)1.6、2.5、4.0、6.4、10
Trip(mm)16254060100
The effective area of the film Ae(cm2)2803505609001400
Signal range KPa20-100、40-200、80-240
Gas pressure steam source MPa0.1--0.4
The inherent flow characteristicsLinear, equal percentage, quick opening
The inherent adjustable ratio50:1
The leakage classHard seal, soft seal IV V; VI
Flange sizeAccording to JB/79. (2) _94, HG20592_97, GB, ANSI, JIB, DIN and other standards
Body materialWCB, 304, 316, WC6, nickel, titanium, Hastelloy, Monel etc.
Valve material304, 316, 420, nickel, titanium, Hastelloy, Monel etc.
Working temperature -40~+230 ℃ (room temperature), +230~+450 ℃, +450~+560 ℃ (Zhong Wen) (high temperature), -40~-196 ℃ (low temperature)
Series typeat room temperature, medium temperature, low temperature type. Bellows seal type, jacket type heat, regulating off type

Main performance index


Serial numberProjectStandard type regulating valveHigh temperature, low temperature valve
Not with a locatorWith a locatorNot with a locatorwith a locator
1The basic error(%)±5±1±15 ±4
2The return difference<(%)31103
3The dead zone<(%)30.481
4Always point bias <(%)Open airThe starting point±2.5±1±6

±2.5

Finish±5±15
Air to closeThe starting point±5±15
Finish±2.5 ±6
5Rated stroke deviation <(%)±2.5+2.5+6+2.5


Note: This product performance accords with GB/T4213 - 2008

Gas off type (positive effect) metal sealing type allows differential pressure gauge Company: MPa

The executive agency modelSpring range(KPa)Air pressure(KPa)Locator (with / no)Seat diameter dn(mm)
20253240506580100125150200
ZHA-2220-1000.14no0.950.61
Belt2.551.63
40-2000.25Belt3.342.14
80-2400.4Belt6.524.17
ZHA-2320-1000.14no 0.490.320.20
Belt 1.310.840.54
40-2000.25Belt 1.721.100.71
80-2400.4Belt 3.362.151.37
ZHA-3420-1000.14no 0.180.120.08
Belt 0.490.320.21
40-2000.25Belt 0.650.430.27
80-2400.4Belt 1.260.830.53
ZHA-4520-1000.14no 0.090.060.03
Belt 0.230.160.09
40-2000.25Belt 0.300.210.12
80-2400.4Belt 0.580.400.22

Air to close (reaction) metal sealing type allows differential pressure gauge Company: MPa

The executive agency modelSpring range(KPa)Air pressure(KPa)Locator (with / no)Seat diameter dn(mm)
20253240506580100125150200
ZHA-2220-1000.14Take / no0.950.61
40-2000.25Belt2.551.63
80-2400.28Belt5.733.67
ZHA-2320-1000.14Take / no 0.490.320.20
40-2000.25Belt 1.310.840.54
80-2400.28Belt 2.951.891.21
ZHA-3420-1000.14Take / no 0.180.120.08
40-2000.25Belt 0.490.320.21
80-2400.28Belt 1.110.730.47
ZHA-4520-1000.14Take / no 0.090.060.03
40-2000.25Belt 0.230.160.09
80-2400.28Belt 0.520.360.20

Air to close (reaction) metal sealing type allows differential pressure gauge Company: MPa

The executive agency modelSpring range(KPa)Air pressure(KPa)Locator (with / no)Seat diameter dn(mm)
20253240506580100125150200
ZHA-2220-1000.14no1.200.76
Belt2.781.78
40-2000.25Belt3.002.29
80-2400.4Belt3.003.00
ZHA-2320-1000.14no 0.620.390.25
Belt 1.440.920.59
40-2000.25Belt 1.851.180.76
80-2400.4Belt 3.002.231.42
ZHA-3420-1000.14no 0.230.150.10
Belt 0.540.360.23
40-2000.25Belt 0.690.460.29
80-2400.4Belt 1.300.860.55
ZHA-4520-1000.14no 0.110.080.04
Belt 0.250.170.10
40-2000.25Belt 0.320.220.13
80-2400.4Belt 0.600.420.23

Gas off type (positive effect) metal sealing type allows differential pressure gauge Company: MPa

The executive agency modelSpring range(KPa)Air pressure(KPa)Locator (with / no)Seat diameter dn(mm)
20253240506580100125150200
ZHA-2220-1000.14Take / no1.190.76
40-2000.25Belt2.781.78
80-2400.28Belt3.003.00
ZHA-2320-1000.14Take / no 0.620.390.25
40-2000.25Belt 1.440.920.59
80-2400.28Belt 3.001.971.26
ZHA-3420-1000.14Take / no 0.230.150.10
40-2000.25Belt 0.540.360.23
80-2400.28Belt 1.150.760.49
ZHA-4520-1000.14Take / no 0.110.070.04
40-2000.25Belt 0.250.170.10
80-2400.28Belt 0.540.370.21

Note that allows differential pressure gauge:
1 packing material for the PTFE
Flow valve 2 medium off in the opposite direction
Leakage in grade IV 3 metal seal type
4 numerical by nominal pressure, pressure, temperature limits
The 5 bellows seal type P2 ≠ 0 re check;


Dimensions and weight Company:mm

All diameter DN20253240506580100125150200250300




LPN16MPa187184200222254276298352410451600673737




PN16MPa194197210235267292317368425473600708775




PN16MPa206210220251286311337394440508650752819




A280360470580



H1PN16、4053586873809098108108140168225245




PN16、646368758388100105125125170203260280




H2Actuator280310395525725
H3High temperature heat sink type210210225230230335335345408454482550580




Bellows seal303305392395405529540553710756800900940




HStandard room temperature40042045045546061062264078087089012051235




Low temperature typeH3750900




H49090929292989898110120120180180




D310310335335335430465520585660770850850




重量kgPN16/402022253238626783132160245350470




N64/10024253042527882102170190285500660




Low temperature type PN16/40404852606890105143210282315580800




Low temperature type PN64/1005060657585112131178262352393725980




When ordering, please fill in "specification" or indicate the following contents:
One, if the order has not selected models, please provide the parameters are used to send us your
1, nominal diameter, nominal flow in coefficient Kv
2, the fluid properties (including the nominal pressure, temperature, viscosity and pH value "
3, the valve action form (gas closed or gas - Open)
4, flow at
5, in front of the valve, the valve pressure
6, valve body, broad core material
7, the input signal
8, with the attachment, the attachment type, so that we can correct for your selection.
Two, special requirements
1, special inspection
2, complete degreasing, water treatment;
3, no copper processing;
4, special interface, piping;
5, the use of vacuum conditions;
6, specify the color of the coating
7, special medium (gas, chlorine, nitrogen)
8, the use of stainless steel connections;
Three, if the unit has been selected from the design of our products, please click models directly to our sales department order
Four, the occasion is very important when using or complicated pipelines, please make cocoons provide design drawings and detailed parameters, from our experts to your review gatekeeper.

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