PTFE Lined Control Valve

What is a PTFE Lined Control Valve?

ZHCF type PTFE lined single-seat control valve is a kind of bellow sealed single-seat control valve. The internal PTFE (F46) lined is workable with high corrosion medium, such as hydrochloric acid, sulfuric acid, nitric acid, hydrofluoric acid, etc.

Pneumatic PTFE Lined Control Valve
Pneumatic PTFE Lined Control Valve
Electric PTFE Lined Control Valve
Electric PTFE Lined Control Valve


Body type:straight through casting globe type
Spool type:non-balanced single-seat plug type
Nominal size:DN20~150 NPS 3/4〞~ 6〞
Nominal pressure:PN16 ~ 25 CLASS 150/300LB
Connection: flange:FF、RF、MF、RTJ
Bonnet type:PTFE lined bellow sealed
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 polyurethane ceramic paint.


ZActuatorHStructureNominal pressureBody materialNominal size
Z series control valveJ: pneumatic diaphragm actuator
H: pneumatic piston actuator
R: electric 3810L actuator
D: electric PSL actuator
Direct travelCF:  standard PTFE lined control valvePN16=16
150 LB
DN25= DN25
Such as Z type pneumatic diaphragm PTFE lined control valve, pressure:  PN16,body material WCB,nominal size DN50,type: ZJHCF-16C DN50


Flow characteristicLinear, percentage, quick open
Allowable range30: 1
Rated Cv valuePercentage CV6.3~400 ,linear CV6.9~440
Allowable leakagesoft seal:  VI grade(foam grade)
Leakage standard:  GB/T 4213
Allowable tolerance, %±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 the control valve with positioned and PTFE packing.

Special specification

Type/MethodPneumatic diaphragm actuatorElectric actuator
ZH23~ZH563810L series
 Multi-spring typeIntelligent integrated type
UsageRegulating type, an ON-OFF typeRegulating
Air supply pressure or Power supply voltageAir 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
ConnectorAir pipe connector: RC1/4Normal type:  cable inlet 2-PF(G1/2〞)
Explosive proof type:  can install protection jacket PF(G3/4〞)
Positive actionPressure increase, stem descend, valve close.Input signal increase, stem descend, valve close.
Negative actionPressure increase, stem ascend, valve open.Input signal increase, stem ascend, valve open.
Input signal40~20mA.DC(with positioner)Input/output4~20mA.DC
Lag≤1%FS(with positioner)≤0.8%FS
Linear type2%FS(with positioner)+1%FS
Environmental temperature-10℃~+70℃Standard type: -10℃~+60℃
With space heater: -35℃~+60℃
Explosive proof: -10℃~+40℃
Surface coatingGreen, acrylic acid polyurethane ceramic coatingBlue, acrylic acid polyurethane ceramic coating
AccessoriesElectric-air (air-air) valve positioned, filter regulator, valve converter, solenoid valve, limited switchSpace heater (normal type)
Note: non-standard accessories, need special customized notes.

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