Minimum Flow Control Valve

Category:

Minimum Flow Control Valve used a multilevel cage symmetric sleeve control valve. It complete control medium velocity within the valve, and greatly reduced noise made by high-pressure gas or steam within the valve, stabile multistage pressure reducing effective prevent liquid cavitation, so it’s the stable control valve used in high-pressure medium performance, customers can also select multi-spring diaphragm mechanism or pneumatic actuators, etc.

 

Tehnical parameters

Body type: Direct casting ball-type valve
Nominal diameter: DN20, 25, 32, 40, 50, 65, 80, 100, 200
Nominal pressure: PN 1.6, 2.5, 4.0, 6.4, 10.0, 16、25Mpa
CLASS 150, 300, 600, 900、1500Lb
Connection flange: FF, RF, RTJ, etc,
welding: SW, BW
Flange distance: according to IEC534
Bonnet type: stdanrd type, lengthened (heat dissipation, low temperature, bellows sealing).
Packing: V type PTFE, flexible graphite, etc.
Sealing gasket: Metal with graphite gaskets
Actuator: Pneumatic, multi-spring actuator.
Electric: 3810L series, PSL series.
Valve disc type: multistage cage sleeve type.
Flow characteristics: equal percentage, linear.
Disc material: standard material composition and applicable temperature, pressure range, please refer to appendix.

Model selection

Z R:3810L series H:Linear actuator D: multistage cage sleeve type -16:
PN1.6Mpa
C:Carbon steel DN 20
Size:20mm
P: PSL series P: Chromium-Nickel- titanium Steel
J:Pneumatic diaphragm -150LB:
CL 150LB
I: Chromium-molybdenum steel -B:Air to close IN 1〞
Size: 1〞
H: Linear cylinder V: Chromium-molybdenum-vanadium steel -K:Ai r to open

Customized selection

Body Type Direct Bonnet Model Standard, lengthened
Material WCB, WC9, 304, 316,etc. Mterial WCB, WC9, 304, 316,etc.
Disc Characteristic Linear, equal percentage, quick opening Packing V type PTFE
Flexible graphite, bellow sealing
Material 304, 304+STL/PTFE, 316, 316+STL/PTFE
Actuator Pneumatic: See appendix6
Electric: See appendix6
Positioner Electric valve positioner, intelligent digital positioner
Accessories Solenoid valve, valve position feedback device, hand-operated the mechanism, lock-up valve, air filter pressure relief device, etc.

Material And Internal Structures

  • The above is standard configuration structure, the valve seat is metal to metal, and we can still provide strengthed trim with stellite alloy coating. For specific applicable temperature, we have more reasonable bolts, nuts for choose.
  • PTFE v-shaped ring stem packing is the standard configuration and can also choose flexible graphite.
  • Standard body material is carbon steel and stainless steel, and we can still provide various high corrosive-resistance alloy materials.
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