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The Parker Sporlan Pressure Regulating Valve, model 900556, is designed to protect compressor motors from overload by maintaining crankcase pressure within safe limits. This valve functions by moderating vapor flow from the evaporator when the compressor is at risk, ensuring reliable and efficient operation.
This valve series includes models such as CRO-4, CRO-6, CROT-6, CRO-10, and CROT-10, all of which respond solely to outlet pressure to prevent suction pressure at the compressor from exceeding preset limits.
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