Material cast steel ( ZG ), cast stainless steel ( ZG 1Cr18Ni9 Ti, ZG 1Cr18Ni 12 Mo 2 Ti ), etc

Upper valve cover common type upper valve cover: - 40 ~ + 230 ℃ fin type upper valve cover: + 230 ~ + 450 ℃

gland type bolt pressing type

Filling material V - shaped PTFE filler, impregnated PTFE asbestos filler, asbestos compression packing, graphite filler

In - valve assembly

Valve core type single seat plunger type valve core

Flow characteristics equal percentage characteristics and linear characteristics

Stainless Steel Surfacing Stellar Alloy, Titanium and Corrosion Resistant Alloy, etc

actuator

Type ZMX ( A / B ) Pneumatic Film Actuator

Diaphragm material nitrile rubber clip nylon cloth

Spring range 20 ~ 100, 40 ~ 200, 80 ~ 240 kpa

The gas supply pressure is kpa

Signal interface M16× 1.5 or ZG1 / 4

Ambient temperature - 25 ~ + 55 ℃

Valve action type gas - closed or gas - open

Attachment positioner, air filter pressure reducer, position maintaining valve, travel switch, valve position transmitter, handwheel mechanism, etc

Sexual energy

Leakage is less than 0.01 % of the rated capacity of the valve, conforming to ANSI B Class 16.Ⅳ

Return belt positioner: less than 1 % of full stroke

Without positioner: less than 3 % of full stroke

Basic error band positioner: less than 1 % of full stroke

Without positioner: less than 5 % of full stroke

Note: When using standard V - shaped PTFE filler

Adjustable range 50: 1