Know about the type of diaphragm valve used in Various Industry

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Know about the type of diaphragm valve used in
Various Industry The type of diaphragm valve
used is dictated by the need to reduce oil, gas
and grease leakage and improve pump life. A
diaphragm valve, if used properly, will typically
operate at pressures up to 140 bar for both
drinking water and water distribution. But for
higher pressures, special valve stem or diaphragm
valve units are available. These have extra
non-conventional components to prevent flapping
during operation and give improved vibration
control. These can operate at pressures up to 300
bar. Enclosed diaphragms are available with a
continuous compression clump valve, closed,
half-closed, soft and hard closure valves and
even integral pressure relief valves. This is
often used when a diaphragm valve unit is not
fitted. But in an enclosed or hydraulic design
valve, the inner diaphragm valve is covered and
sealed with a sealing diaphragm to reduce
leakage. Closed type diaphragms are generally
not used for sanitary applications. Its much
more appropriate to use an enclosed valve in a
sanitary system. For certain applications,
closed diaphragms are required, for example to
prevent contaminants from getting into the
diaphragm.