for the OFF delay (purge) function to operate correctly

17 to 12 inches water column (WC)

Universal Mounting: Designed for standard 2 x 4 inch vertical or horizontal wall box installation with large binder head screws for secure line voltage wiring

The terminals are clearly marked: 'Herm' for the compressor

Precisely engineered 4-hole pattern ensures alignment with the 14-B blow-down valve housing

Parker 70392 Brass Valve 30067439-890 for the OFF delay (purge)The Parker 70392 is a robust 3 8" NPT normally closed solenoid valve designed for high performance fluid control in HVACR and industrial applications. Engineered within the GP300 series, this brass body solenoid valve features a 5 32" orifice and is rated for a broad pressure range of 1 to 150 PSI, making it ideal for general purpose media control including air, water, and light oils. Its 2 way configuration ensures reliable shut off performance,