types of valves summary
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8/15/2019 Types of Valves Summary
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Types of Valves Summary
Gate valves are generally used in systems
where low flow resistance for a fully
open valve is desired and there is no need to
throttle the flow.
Globe valves are used in systems where
good throttling characteristics and lowseat leakage are desired and a relatively high
head loss in an open valve is
acceptable.
Ball valves allow quick, quarter turn on-off
operation and have poor throttlingcharacteristics.
Plug valves are often used to direct flow
between several different ports throughuse of a single valve.
Diaphragm valves and pinch valves areused in systems where it is desirable for
the entire operating mechanism to be
completely isolated from the fluid.
Butterfly valves provide significant
advantages over other valve designs inweight,space, and cost for large valve applications.
Check valves automatically open to allowflow in one direction and seat to prevent
flow in the reverse direction.
Stop check valve is a combination of a lift
check valve and a globe valve and
incorporates the characteristics of both.
Safety/relief valves are used to provide
automatic overpressurization protection for
a system.
Angle valves are globe valves in which the
inlet and outlet openings are at 90deg to one
another.
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