Pneumatic membrane three-way control valve adopts cylindrical thin-walled window-shaped valve core guide, which is different from the bushing guide of plunger-shaped valve core. Equipped with multi-spring actuator, it has the advantages of simple structure, light weight, small volume and convenient disassembly and assembly. and other advantages. It is widely used in the process of precise control of gas, liquid and other media, such as pressure, flow, temperature and liquid level to maintain a given value. It is suitable for the occasion of dividing a fluid into two channels through a three-way valve or combining two fluids into one fluid through a three-way valve. , 40, 64; the nominal diameter range is DN25—300. The applicable fluid temperature is from -60°C to +450°C. The leakage standard is grade IV. There are two types of flow characteristics: linear and parabolic.

Pneumatic membrane three-way regulating valve main parts material
Valve body and bonnet: HT200, ZG230—450, ZG1Cr18Ni9Ti

Valve core, valve seat: 1Cr18Ni9Ti

Corrugated diaphragm: nitrile rubber clip reinforced polyester weave

Material filler: PTFE, flexible graphite

Spring: 60Si2Mn

Membrane cover: A3

Stem, push rod: 2Cr13, 1Cr18Ni9T

Bushing: 2Cr13

Gasket: rubber asbestos plate, 1Cr18Ni9Ti, asbestos spiral wound gasket