Pneumatic | Electric
ZHP Type Single Seat Control Valve
ZHP type single-seat control valve is a kind of top pilot single seat valve, which has a simple structure, well sealing, high flow rate and stable application performance. The reasonable top spiral system can avoid vibration during a small opening percentage, so as to extend valve working life.
Pneumatic Single Seat Control Valve
Electric Single Seat Control Valve
Specification
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 type Warm 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. |
Code
Z | Actuator | H | Structure | Nominal pressure | Body material | Nominal size |
---|---|---|---|---|---|---|
Z series control valve | J: pneumatic diaphragm actuator H: pneumatic piston actuator R: electric 3810L actuator D: electric PSL actuator | Direct travel | P: standard single seat PF: soft-sealing single seat PL: single-seat cage type PG: radiator single-seat type PV: bellow seal single seat PD: low-temperature single seat | PN16=16 CL150LB=150 LB JIS10K=10K | C=WCB LC=LCB P=CF8 PL=CF3 R=CF8M RL=CF3M D=special material | DN25= DN25 NPS1〞=NPS1〞 |
Such as: Z type pneumatic diaphragm single seat control valve, PN16, body: WCB, nominal size: DN50, type: ZJHP-16C DN50 |
Performance
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 | |
The difference from beginning to endpoint, % | ±2.5 | ±2.5 | |
Rated travel difference, % | ≤2.5 | ≤2.5 |
Note: specification on the basis of a control valve with positioner PTFE packing.
Special specification
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 |
Single Seat Control Valve Actuator
Type\ Method | Pneumatic diaphragm actuator | Electric actuator |
---|---|---|
ZH23~ZH56 | 3810L series | |
Multi-spring type | Intelligent integrated type | |
Usage | Regulating type, an ON-OFF type | Regulating |
Air supply pressure or Power supply voltage | Air supply pressure (Spring range) 140(20~100)Kpa G 240 (40~200) Kpa G 280 (80~240) Kpa G | Power: AC 200V±10% 50Hz Or Power: AC 380V±10% 50Hz |
Connector | Air pipe connector: RC1/4 | Normal 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 heater (normal type) |
Note 1: non-standard accessories, need special customized notes.
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