Description

A diaphragm valve is a manual or control type block valve which uses a diaphragm as ... Diaphragm valves are normally operated by manual intervention

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• There are two main categories of diaphragm valves: one type seals over a "weir" (saddle) and the other (sometimes called a "full bore or straight-way" valve) seals over a seat. The weir or saddle type is the most common in process applications and the seat-type is more commonly used in slurry applications to reduce blocking issues but exists also as a process valve.