What is a diaphragm valve?

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The diaphragm valve is a new type of valve, a special form of the shut-off valve. Diaphragm valves (or membrane valves) consists of a valve body with two or more ports, an elastomeric diaphragm, and a “weir or saddle” or seat upon which the diaphragm closes the valve. Its opening and closing member is a diaphragm made of soft material.

diaphragm or membrane

Diaphragm Valve Structure

Diaphragm Valve Structure

Diaphragm Valve Working Animation

Diaphragm valve body with many materials including stainless steel, brass, steel, iron steel, alloy, plastic PVC, ABS, PP, PE… Normally speaking, a hygienic or aseptic diaphragm valve is made of stainless steel used for pharmaceutical industries.

Diaphragm Valve Manufacturer in China

DONJOY is a sanitary stainless steel diaphragm valve manufacturer in China, founded in 1993, have more than 29 years of experience, providing the best wholesale price diaphragm valves. surface roughness RA 0.4μm electropolished is available, size from 1/4” to 4”, more ports with 2/2 way, 3 way, T-shape, U-curve, zero dead-leg. Diaphragm valves can be manual or automated. Automated diaphragm valves use pneumatic, or electric actuators along with accessories such as limit switches, control top and positioners. Meet US-3A, ASME BPE, FDA standard used for pharmaceutical processes

DONJOY Diaphragm Valve Video

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