Slow Closing Solenoid Valve Slow Closing Solenoid Valve Valve Ways and Positions 2-Way/2-Position Normally Closed Media - Valves Water Pipe Size - Valves 1-1/2 In. Min Operating Pressure Differential 5 psi Max Operating Pressure Differential Light Oil Not Rated Max Operating Pressure Differential Water 150 psi Indoor Outdoor Voltage 120VAC Coefficient of Volume 24.00 Body Material - Valves Brass Coil Insulation Class F Seal Material - Valves NBR Orifice Dia 1-1/4 In.