Pressure sustaning valve PS45 (ANSI)

DESCRIPTION

The ADCA PS45 series pressure sustaining valves are single seat bellows sealed controllers, operating without auxiliary energy, designed for use on steam, compressed air, and other gases compatible with the construction.

They are particularly suitable for sustaining steam pressure in all energy and process systems where upstream pressures must be kept under control.

OPERATION

Pressure sustaining is achieved by variable throttling of the inlet flow at the valve seat by variation of the flow area between seat and disc. The inlet pressure which is transmitted through the sensing line to the diaphragm or piston chamber counteracts the spring force acting on the valve spindle and controls the valve aperture corresponding to the spring setting and thus to the required inlet pressure.

MAIN FEATURES

Specially designed high durability bellows, providing pressure balancing and friction less plug stem.

Robust construction (fit-and-forget).

Suitable for use with high pressure turndowns.

Interchangeable actuators