STEAM VALVE

Steam Valves are all characterized by a closer member, usually
in disc or plug form, which is moved by the actuator perpendicular
to a ring shaped seat. The flow passes from the inlet port through
the seat to outlet port. The types differ mainly in the orientation
of the seat to the direction of flow through the valve. There are
many variations in seat, stem and bonnet design in Steam Valve.
All the working parts are generally of stainless steel to avoid wear
and tear.

Steam valves are used primarily for steam purpose. They are used
where pressure condition are severe and hence are heavier than
most of the other types of valves. Steam valve can control flow
and provide tight seal when fully closed.

Steam valves are faster to open or close. Due to stainless steel
working parts, their seating surfaces are less subject to wear and
their high pressure drop makes them useful in controlling pressure.

Due to heavy structure, such valves are costlier than other valves.
In large size they require considerable power to operate, thus
necessitating gearing, levers etc.

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