ZHP Type Single Seat Control Valve
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China [CN] ZHP Type Single Seat Control Valve is a kind of top pilot single seat valve, which has simple structure, well sealing, high flow rate and stable application performance. Reasonable top spiral system can avoid vibration during small opening percentage, so as to extend valve working life.
| Body type: | straight through casting globe type |
|---|---|
| Spool type: | non-balanced single seat plug type |
| Nominal size: | DN20~200 NPS 3/4〞~ 8〞 |
| Nominal pressure: | PN16 ~ 100 CLASS 150LB ~ 600LB |
| Connection: flange: | FF、RF、MF、RTJ |
| Welding: | SW、BW |
| Flange dimension: | acc. to IEC 60534 |
| Bonnet type: | standard type（-5℃~230℃）Radiator type: （-45℃~ high than 230℃ occasion）Low temperature extended type（-196℃~ -45℃）Bellow seal typeWarm insulation Jacket type |
| Packing: | V type PFTE packing, flex. graphite packing, etc. |
| Gasket: | Metal graphite packing |
| Actuator: | pneumatic: multi-spring diaphragm actuator, piston type actuator.electric: 3810L series smart actuator, PSL series actuator. |
| Surface painting: | Green color, acrylic acid polyurthene ceramic paint. |
| Z | Actuator | H | Structure | Nominal Pressure | Body Material | Nominal Size |
|---|---|---|---|---|---|---|
| Z series control valve | J: pneumatic diaphragm actuatorH: pneumatic piston actuatorR: electric 3810L actuatorD: electric PSL actuator | Hdirect travel | P: standard single seatPF: soft sealing single seatPL: single seat cage typePG: radiator single seat typePV: bellow seal single seatPD: low temperature single seat | PN16=16CL150LB=150 LBJIS10K=10K | C=WCBLC=LCBP=CF8PL=CF3R=CF8MRL=CF3MD=special material | DN25= DN25NPS1〞=NPS1〞 |
| Such as: Z type pneumatic diaphragm single seat control valve, PN16, body: WCB, nominal size: DN50, type: ZJHP-16C DN50 | ||||||
| Flow Characteristic | Linear, Percentage, Quick Open | ||
|---|---|---|---|
| Allowable Range | 50: 1 (CV<6.3 30: 1) | ||
| Rated Cv Value | Percentage CV1.6~630 ，linear CV1.8~690 | ||
| Allowable Leakage | Metal seal: IV grade（0.01% rated capacity）Soft seal: VI grade（foam grade） Leakage standard: GB/T 4213 | ||
| Performance | Pneumatic | Electric | |
| Intrinsic Error % | ±1.5 | ±1.0 | |
| Return Difference, % | ≤1.5 | ≤1.0 | |
| Dead Zone, % | ≤0.6 | ≤1.0 | |
| Difference From Beginning To End Point, % | ±2.5 | ±2.5 | |
| Rated Travel Difference, % | ≤2.5 | ≤2.5 | |
Note: specification on the basis of control valve with positionerand PTFE packing.
| Special Test | Material Penetration Flaw Detection (PT), Radiator Test (RT), Flow Characteristic Test,Low Temperature Test. |
|---|---|
| Special treatment | Trim nitrogen treatment, seat hard alloy treatment. |
| Special rinse | Degreasing and dehydration treatment |
| Special condition | Special piping or connection, vacuum condition, S.S fastener, special coating. |
| Special dimension | Customized face to face length or dimension |
| Test and inspection | Third party test report |
| Type\ Method | Pneumatic Diaphragm Actuator | Electric Actuator |
|---|---|---|
| ZH23～ZH56 | 3810L Series | |
| Multi-Spring Type | Intelligent Integrated Type | |
| Usage | Regulating type, ON-OFF type | Regulating |
| Air Supply Pressure Or Power Supply Voltage | Air supply pressure (Spring range)140（20～100）Kpa G240 (40～200) Kpa G280 (80～240) Kpa G | Power: AC 200V±10% 50HzOr Power: AC 380V±10% 50Hz |
| Connector | Air pipe connector: RC1/4 | Nomal type: cable inlet 2-PF(G1/2〞)Explosive proof: Protection jacket PF(G3/4〞) |
| Direct Action | Pressure increase, stem descend, valve close. | Input signal increase, stem descend, valve close. |
| Reaction | Pressure increase, stem ascend, valve open. | Input signal increase, stem ascend, valve open. |
| Input Signal | 40～20mA.DC（with positioner） | Input/output4～20mA.DC |
| Lag | ≤1%FS（with positioner） | ≤0.8%FS |
| Linear Type | 2%FS（with positioner） | ≤+1%FS |
| Environmental Temperature | -10℃～+70℃ | Standard type: -10℃～+60℃With space heater : -35℃～+60℃Explosive proof: -10℃～+40℃ |
| Surface Coating | Green, acrylic acid polyurethane coating | Blue, acrylic acid polyurethane coating |
| Accessories | E/P, P/P valve positioner, filter regulator, valve converter, solenoid valve, limited switch | Space hearter (normal type) |
Note 1: non-standard accessories, need special customized notes.
| Seat Diameter(Mm) | 10 | 12 | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rated Cv | Percentage | 1.6 | 2.5 | 4.0 | 6.3 | 10 | 16 | 25 | 40 | 63 | 100 | 160 | 250 | 400 | 630 | |
| Linear | 1.8 | 2.8 | 4.4 | 6.9 | 11 | 17.6 | 27.5 | 44 | 69 | 110 | 176 | 275 | 440 | 690 | ||
| Nom. Size | Travel | Option flow characteristic Cv. (★standard ●recommanded ○customized) | ||||||||||||||
| DN20 | 16mm | ● | ● | ● | ★ | |||||||||||
| DN25 | ● | ● | ● | ● | ★ | |||||||||||
| DN32 | 25 Mm | ○ | ○ | ○ | ○ | ○ | ★ | |||||||||
| DN40 | ○ | ○ | ○ | ○ | ● | ★ | ||||||||||
| DN50 | ○ | ○ | ○ | ● | ● | ★ | ||||||||||
| DN65 | 40mm | ○ | ○ | ○ | ★ | |||||||||||
| DN80 | ○ | ○ | ○ | ● | ★ | |||||||||||
| DN100 | ○ | ○ | ○ | ● | ● | ★ | ||||||||||
| DN125 | 60mm | ○ | ○ | ○ | ★ | |||||||||||
| DN150 | ○ | ○ | ● | ★ | ||||||||||||
| DN200 | ○ | ○ | ● | ● | ★ | |||||||||||
| Pneumatic ActuatorDiaphragm Area, Ae(Cm2) | ZHA/B-22 | ZHA/B-23 | ZHA/B-34 | ZHA/B-45 | ||||||||||||
| 350 | 350 | 560 | 900 | |||||||||||||
| Action | Spring Range | Metal Sealing Allowable Pressure Difference (MPa) | ||||||||||||||
| Air Open | 20-100KPa | 4.46 | 3.09 | 1.98 | 1.16 | 0.7 | 0.44 | 0.28 | 0.18 | 0.17 | 0.11 | 0.07 | 0.07 | 0.05 | 0.03 | |
| 40-200 KPa | 6.4 | 6.4 | 5.94 | 3.34 | 2.14 | 1.31 | 0.84 | 0.53 | 0.51 | 0.33 | 0.21 | 0.22 | 0.15 | 0.09 | ||
| 80-240 KPa | 6.4 | 6.4 | 6.4 | 6.4 | 4.99 | 3.05 | 1.95 | 1.25 | 1.18 | 0.78 | 0.5 | 0.51 | 0.36 | 0.21 | ||
| Air Close | 20-100KPa | 6.4 | 6.19 | 3.96 | 2.23 | 2.14 | 0.87 | 0.56 | 0.35 | 0.34 | 0.22 | 0.14 | 0.15 | 0.1 | 0.06 | |
| 40-200 KPa | 6.4 | 6.4 | 6.4 | 6.4 | 6.4 | 5.86 | 3.64 | 2.3 | 2.21 | 1.43 | 0.91 | 0.95 | 0.66 | 0.37 | ||
| 80-240 KPa | 6.4 | 6.4 | 6.4 | 6.4 | 6.4 | 6.4 | 5.04 | 3.18 | 3.06 | 1.98 | 1.26 | 1.32 | 0.92 | 0.52 | ||
| Electric Actuator | Metal Sealing Max. Allowable Pressure Difference (MPa) | |||||||||||||||
| Type | Thrust(N) | |||||||||||||||
| 3810L-08 | 800 | 6.4 | 5.5 | 3.5 | 2.38 | |||||||||||
| 3810L-20 | 2000 | 6.4 | 6.4 | 6.4 | 4.77 | 3.05 | 1.86 | 1.19 | 0.76 | |||||||
| 3810L-30 | 3000 | 2.79 | 1.79 | 1.14 | ||||||||||||
| 3810L-50 | 5000 | 4.66 | 2.98 | 1.91 | 1.13 | 0.6 | 0.47 | |||||||||
| 3810L-65 | 6500 | 1.35 | 0.8 | 0.57 | 0.39 | 0.26 | 0.16 | |||||||||
| 3810L-99 | 10000 | 0.61 | 0.42 | 0.20 | ||||||||||||
| 3810L-160 | 16000 | 0.97 | 0.67 | 0.35 | ||||||||||||
| Table 1: Body WCB
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 Table 2: Body S.S
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| Note:
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 PV bellow sealed single seat control valveCan apply with multi-layer bellow seal, well protect medium against loss. |
 PD low temperature single seat control valvespool integrated external suction structure, convenient and easy for maintenance. |
 PG radiator single seat control valveapplicable for temperature -45℃~higher 230℃. |
 PF soft sealing single seat control valveapplicable for VI grade sealing requirement. |
 PL single seat cage type control valvesymmetry multi-pore cage structure can control noisy and cavitation effectively. |
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