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A diaphragm valve, or membrane valve, consists of a valve body with two or more ports, a flexible diaphragm, and a weir, saddle, or seat upon which the diaphragm closes the valve. The valve body may be constructed from plastic, metal or other materials depending on the intended use.

Categories

There are two main categories of diaphragm valves: One type seals over a weir, or saddle, and the other

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