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Re: POA VALVES AND R134 CONVERSION
Posted to HVAC Forum on 5/28/2020 2 Replies

POA stands for Pilot Operated Absolute Pressure Control Valve. It controls the absolute pressure in the evaporator, and hence evaporator temperature. It was mounted under the hood, at least on the GM products I worked on. I agree that the POA valves were probl... Login to read more.

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