Best quality Diaphragm Valve - ZHD Series (Electric or Pneumatic) Minimum Flow Control Valve – Convista

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

Technical Parameters

Body type: Direct forging type valve

Nominal diameter: NPS1″-8″ (DN20, 25, 32, 40, 50, 65, 80, 100, 200)

Nominal pressure: CLASS 150, 300, 600, 900, 1500Lb, PN1.6, 2.5, 4.0, 6.4, 10.0, 16, 25MPa

End connection type: FF, RF, RTJ, etc, welding: SW, BW

Flange dimension: According to IEC534

Bonnet type: Standard type, lengthened (heat dissipation, low temperature, bellows sealing).

Packing: V type PTFE, flexible graphite gaskets

Sealing gasket: Metal with graphite gaskets

Actuator: Pneumatic, multi-spring actuator.

Electric: 3810L series, PSL series.

Valve disc type: Multistage cage sleeve type.

Flow characteristices: Equal percentage, linear.

Disc material: standard material composition and applicable temperature, pressure range, please refer to appendix.

Material and internal structure

Body material: carbon steel

Body material: stainless steel