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.


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 CF:  standard PTFE lined control valve PN16=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 characteristic Linear, percentage, quick open
Allowable range 30: 1
Rated Cv value Percentage CV6.3~400 ,linear CV6.9~440
Allowable leakage soft seal:  VI grade(foam grade)
Leakage standard:  GB/T 4213
Performance Pneumatic Electric
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.
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 type:  can install 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 ceramic coating Blue, acrylic acid polyurethane ceramic coating
Accessories Electric-air (air-air) valve positioned, filter regulator, valve converter, solenoid valve, limited switch Space heater (normal type)
Note: non-standard accessories, need special customized notes.

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