Item - Check Valves: Check Valve; Flow Design: Single; Mechanism and Body Design: Inline Spring; Body Material - Valves: PVC; Pipe or Tube Size - Check Valves: 1 in; Connection Type - Check Valves: FNPT x FNPT; Cracking Pressure - Check Valves: 2 psi; Mounting Orientation - Check Valves: Horizontal, Vertical; Seal Material - Check Valves: EPDM; Max. Temp. - Valves: 140 Degrees F; Min. Temp. - Valves: 40 Degrees F; Max. Water Pressure - Valves: 150 psi @ 70 Degrees F; Max. Steam Pressure - Valves: Not Rated; Seat Material - Check Valves: PVC; Spring Material - Check Valves: Stainless Steel; Flow - Valves: 15 gpm; Application - Valves: General Purpose; Length: 5 3/16 in; Width: 2 5/32 in; Overall Height: 5 37/64 in; Cap to Inlet Center: 4 5/8 in; Hex Size: 1 1/2 in