Suction Valve Unloader

The flow control devices attached to reciprocating compressor suction valves that prevent gas pressure from building up in each cylinder end. This is accomplished by holding the valve plates open with a finger-type unloader or retracting a plug with a plug-type unloader from the center of the valve. Suction valve unloaders can be activated to unload one cylinder end at a time or combinations of head ends and crank ends as a function of the total throughput required and gas temperature.