Angle Body Piston Valve Nominal Pipe Size 1 in Orifice Diameter 1 in Coefficient of Volume (Cv) 15 Operating Pressure Differential - Minimum 0 psi Operating Pressure Differential Steam - Maximum 90 psi Operating Pressure Differential Water - Maximum 90 psi Fluid Temperature - Maximum 366 Degrees F Environmental Rating Indoor Outdoor Valve Ways 2-Way Valve Positions 2-Position Valve Starting Configuration Normally Closed Body Material Stainless Steel Seal Material PTFE