ZHF(H) Type 3-Way Control Valve
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China [CN] ZHF(H) Type 3-Way Control Valve (Pneumatic / Electric) includes disverging and converging actions, it can replace two sets two-way valve and widely used in many occasions to regulate pressure, flowrate, temperature and liquid level. Spool structure with side guiding, well stability, no vibration, low noisy, can bear high pressure difference, easy for connection, etc. While with low nominal size and pressure difference, converging valve can be used in disverging occasion. However, while nominal size higher than DN100 and high pressure difference, converging valve and disverging valve can’t be exchanged.
| Body type: | 3-way casting globe type |
|---|---|
| Spool type: | 3-way double seat spool |
| Nominal size: | DN20~300 NPS 3/4〞~ 12〞 |
| 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℃~higher than 230℃occasion）Low temperature extended type（-196℃~ -45℃）Bellow seal 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 diaphragmtypeH: pneumatic piston typeR: electric 3810L typeD: electric PSL type | H: direct travel | F: disverging typeH: converging typeF(H)G: radiator disverging(converging) typeF(H)V: bellow seal disverging(converging) typeF(H)D: low temperaturedisverging(converging) type | PN16=16CL150LB=150 LBJIS10K=10K | C=WCBLC=LCBP=CF8PL=CF3R=CF8MRL=CF3MD= special material | DN25= DN25NPS1〞=NPS 1〞 |
| Such as: Pneumatic diaphragm converging (disverging) 3-way control valve, radiator type, pressure PN16, valve material WCB, nominal size DN50, type: ZJHFG-16C DN50 | ||||||
| Flow Characteristic | Linear, Percentage | ||
|---|---|---|---|
| Allowable range | 30: 1 | ||
| Rated Cv value | Percentage \ linear CV8.5~1280 | ||
| Allowable leakage | Metal seal: IV grade（0.01% rated capacity） | ||
| Performance | Pneumatic | Electric | |
| Allowable tolerance, % | ±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 positioner and 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〞) |
| Positive action | Pressure increase, stem descend, valve close. | Input signal increase, stem descend, valve close. |
| Negative action | 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 | Electric-air (air-air) valve positioned, filter regulator, valve converter, solenoid valve, limited switch | Space hearter (normal type) |
| Note : non-standard accessories, need special customized notes. | ||
| Seat diamter（mm） | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | ||
| Rated flow coefficient, CV | 8.5 | 13 | 21 | 34 | 53 | 85 | 135 | 210 | 340 | 535 | 800 | 1280 | ||
| Nominal Size | Travel | Option Flow Coefficient Cv（★Standard ●Recommended） | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DN25 | 16 mm | ★ | ||||||||||||
| DN32 | 25 mm | ★ | ||||||||||||
| DN40 | ● | ★ | ||||||||||||
| DN50 | ● | ● | ★ | |||||||||||
| DN65 | 40mm | ★ | ||||||||||||
| DN80 | ● | ★ | ||||||||||||
| DN100 | ● | ● | ★ | |||||||||||
| DN125 | 60mm | ★ | ||||||||||||
| DN150 | ● | ★ | ||||||||||||
| DN200 | ● | ● | ★ | |||||||||||
| DN250 | 100mm | ● | ● | ★ | ||||||||||
| DN300 | ● | ● | ★ | |||||||||||
| Pneumatic ActuatorDiaphragm Area, Ae (Cm2) | ZHA/B-23 | ZHA/B-34 | ZHA/B-45 | ZHA/B-56 | ||||||||||
| 350 | 560 | 900 | 1600 | |||||||||||
| Action | Spring Range | Metal Sealing Allowable Pressure Difference（MPa） | ||||||||||||
| Air open | 20-100KPa | 0.7 | 0.44 | 0.28 | 0.18 | 0.17 | 0.11 | 0.07 | 0.07 | 0.05 | 0.03 | 0.05 | 0.03 | |
| 40-200 KPa | 2.14 | 1.31 | 0.84 | 0.53 | 0.51 | 0.33 | 0.21 | 0.22 | 0.15 | 0.09 | 0.11 | 0.07 | ||
| 80-240 KPa | 4.99 | 3.05 | 1.95 | 1.25 | 1.18 | 0.78 | 0.5 | 0.51 | 0.36 | 0.21 | 0.21 | 0.15 | ||
| Air close | 20-100KPa | 2.14 | 0.87 | 0.56 | 0.35 | 0.34 | 0.22 | 0.14 | 0.15 | 0.1 | 0.06 | 0.05 | 0.03 | |
| 40-200 KPa | 6.4 | 5.86 | 3.64 | 2.3 | 2.21 | 1.43 | 0.91 | 0.95 | 0.66 | 0.37 | 0.11 | 0.07 | ||
| 80-240 KPa | 6.4 | 6.4 | 5.04 | 3.18 | 3.06 | 1.98 | 1.26 | 1.32 | 0.92 | 0.52 | 0.21 | 0.15 | ||
| Electric Actuator | Metal Sealing Max. Allowable Pressure Difference（MPa） | |||||||||||||
| Type | Thrust（N） | |||||||||||||
| 3810L-08 | 800 | 1.52 | ||||||||||||
| 3810L-20 | 2000 | 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 | 0.17 | 0.11 | ||||||||
| 3810L-160 | 16000 | 0.97 | 0.67 | 0.35 | 0.27 | 0.18 | ||||||||
| Table 1: Body WCB
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 Table 2: Body S.S
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| Note:
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| MG type radiator plate 3 way control vavle, applicable for temperature -45℃~higher 230℃ | MV type bellow sealed 3 way control valve, applicable for multi-layer bellow seal, well protected medium against loss. | MD type low temperature 3 way control valve, spool integrated external suction structure, convenient and easy for maintenance. |
| Valve Type | ZHF Disverging 3-Way Valve | ZHH Converging 3-Way Valve | ||||||
|---|---|---|---|---|---|---|---|---|
| Actuator | Positive action（signal close） | Negative action（signal open） | Positive action（signal close） | Negative action（signal open） | ||||
| Input signal 0% | Input signal 100% | Input signal 0% | Input signal 100% | Input signal 0% | Input signal 100% | Input signal 0% | Input signal 100% | |
| Flow Direction | AB→B | AB→A | AB→A | AB→B | A→AB | B→AB | B→AB | A→AB |
| Flow Direction |  3 way mixed flow control valve |
 3 way diverting flow control valve |
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