Slow Closing Hot Water Solenoid Valve Slow Closing Hot Water Solenoid Valve 2-Way/2-Position Normally Closed Media - Valves Hot Water Pipe Size - Valves 1 In. Min Operating Pressure Differential 5 psi Max Operating Pressure Differential Hot Water 150 psi Environmental Rating - Valves Indoor Outdoor Voltage 120VAC Coefficient of Volume 11.50 Body Material - Valves Brass Coil Insulation Class F Orifice Dia 1 In. NEMA Rating 1 2 3 3S 4 4X