ZJHF Type Pneumatic 3-Way Control Valve
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.
J: pneumatic diaphragm
type
H: pneumatic piston type
H: direct travel
F: disverging type
H: converging type
F(H)G: radiator disverging(converging) type
F(H)V: bellow seal disverging
(converging) type
F(H)D: low temperature
disverging(converging) type
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〞=
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
Performance
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 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
3-way Control Valve Actuator
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 G
240 (40~200) Kpa G
280 (80~240) Kpa G
Power: AC 200V±10% 50Hz
Or Power: AC 380V±10% 50Hz