Angle Body Piston Valve Angle Body Piston Valve Valve Ways and Positions 2-Way/2-Position Normally Closed Media - Valves Air Inert Gases Light Slurries Oil Water Pipe Size - Valves 2 In. Min Operating Pressure Differential 0 psi Max Operating Pressure Differential Water 90 psi Max Operating Pressure Differential Steam 90 psi Indoor Outdoor Coefficient of Volume 68.0 Body Material - Valves Bronze Seal Material - Valves PTFE Orifice Dia 2 In.