Multi-Layer Control Valve

Category:

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.

 

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

Z Actuator H Structure Nominal pressure Body material Nominal size
Z series control valve R: electric 3810L actuator
D: electric PSL actuator
Hdirect travel D:  multi-layer sleepve 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
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