Centrifugal Compressors – Flare Valve, Suction Pressure Throttle Valve

Flare Valve
As suction pressure increases or discharge pressure decreases, the compressor head requirement will decrease and the flow rate will increase. A flare valve will avoid stonewalling or overranging driver horsepower.

Suction Pressure Throttle Valve
A throttling device can also be placed in the suction piping to protect against overpressure or to limit the horsepower demand to the maximum available from the driver.

Example process flow of centrifugal compressor.


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