Check the listing for details. GRAINGER APPROVED CHK SST 210-2F2M-F Piston Spring Check Valve 4DHT7. Condition: New. Listed at 42.64 USD. Item - Check Valves Check Valve, Flow Design Single, Mechanism and Body Design Inline Piston, Body Material - Valves Stainless Steel, Pipe or Tube Size 1/8 in, Connection Type MNPT x FNPT, Cracking Pressure 1 psi, Mounting Orientation Horizontal, Vertical, Seal Material Viton, Max. Temp. - Valves 180 Degrees F, Min. Temp. - Valves -20 Degrees F, Max. Water Pressure - Valves 500 psi, Max. Steam Pressure - Valves Not Rated, Seat Material Stainless Steel, Spring Material Stainless Steel This compact spring check valve can be installed in tight spaces to provide backflow protection for a variety of applications. The first connection listed is the direction of flow. The poppet design provides a positive seal down to approximately 1/2 psi.