York S1 3390 00 Valve 320074 702 Approximately 1 7 8 inches Approximately 1 7 8 inches this model is designed for use in heat pump applications where reverse flow is required during the heating cycle without damaging the metering device provided the voltage and series match or electrical failures
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York S1-3390-00 Valve 320074-702 Approximately 1-7/8 inches