Diaphragm Valve

The operation of a diaphragm valve is generally by a hand wheel device screwing down a stem with a saddle on the end, which in turn forces an elastomeric diaphragm on to a polished surface inside the valve body. Diaphragm valves can be either "weir" type or "full bore" type configurations. Energisation of the seal is purely by mechanical force, applied by the hand wheel through the screwed stem and saddle.

Further Information
Diaphragm Valves - General Design Criteria
Standard Pressure Class Ratings / End Connections
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