Item – Check Valves Check Valve, Mechanism and Body Design Swing, Body Material – Valves CPVC, Pipe or Tube Size 4 in, Connection Type Flanged, Mounting Orientation Horizontal, Vertical, Seal Material FPM, Max. Water Pressure – Valves 150 psi @ 70 Degrees F, Max. Steam Pressure – Valves Not Rated, Seat Material FPM, Full Flow – Valves Yes, Length 11 13/16 in, Width 10 61/64 in, Overall Height 11 3/8 in, Hex Size Not Applicable, Standards ASTM D1784