Multi-Layer Control Valve

Pneumatic Multi-Layer Control Valve | Electric Multi-Layer Control Valve

ZHD Type Multi-Layer Control Valve Introduction

ZHD type multi-layer control valve applied with multi-cage sleeve type spool or axial labyrinth spool, multi-layer pressure reducing. It controls the medium flowrate, reduces noisy caused by high-pressure air or steam, qualified in the high-pressure medium occasion. It can be applied with a multi-spring pneumatic diaphragm actuator or electric actuator.

PRODUCT DETAILS

Pneumatic Multi-Layer Control Valve
Pneumatic Multi-Layer Control Valve
Electric Multi-Layer Control Valve
Electric Multi-Layer Control Valve
Specification
Body type:straight through casting globe type
Spool type:multi-layer choke spool
Nominal size:DN20~200 NPS 3/4〞~ 8〞
Nominal pressure:PN160 ~ 420 CLASS 900LB ~2500LB
Connection: flange:flange: FF、RF、MF、RTJ
 Welding: SW、BW
Bonnet type:standard type(-5℃~230℃)、
Radiator type: (-45℃~higher than 230℃ occasion)、
Low temperature extended type(-196℃~ -45℃)
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

ZActuatorHStructureNominal pressureBody materialNominal size
Z series control valveJ:  pneumatic diaphragm actuator
H: pneumatic piston actuator
Direct travelD:  multi-layer sleeve type control valve
G:  axial labyrinth control valve
PN160=160
CL1500LB=
1500 LB
C=A105
LC=LF2
P=F304
PL=F304L
R=F316
RL=F316L
D= special
material
DN25= DN25
NPS1〞=NPS1〞
Such as: Z type pneumatic diaphragm multi-layer sleeve type control valve, pressure PN160,valve materialA105,nominal size DN50,type: ZJHD-160 DN50

Performance

Flow characteristicLinear, percentage
Allowable range50: 1 ~200: 1
Rated Cv valueCustomized
Allowable leakageMetal seal:  IV grade(0.01% rated capacity)
Performance PneumaticElectric
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

Special testMaterial penetration flaw detection (PT), radiator test (RT), flow characteristic test, low-temperature test.
Special treatmentTrim nitrogen treatment, seat hard alloy treatment.
Special rinseDegreasing and dehydration treatment
Special conditionSpecial piping or connection, vacuum condition, S.S fastener, special coating.
Special dimensionCustomized face to face length or dimension
Test and inspectionThird-party test report

Actuator

Type/ MethodPneumatic diaphragm actuatorElectric actuator
ZH23~ZH563810L series
 Multi-spring type   Intelligent 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:  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 coatingBlue, acrylic acid polyurethane coating
AccessariesElectric-air (air-air) valve positioned, filter regulator, valve converter, solenoid valve, limited switchSpace hearter (normal type)
Note : non-standard accessories, need special customized notes.

Have Questions about our valves ?

Our professional valves engineers are waiting for your consultation.

Scroll to Top