Legris 7995 56 14 Composite Check Valve, 1/4" NPT Male x 1/4" Tube OD Inline check valve for use in controlling the direction of air flow Male NPT threaded connection with O-ring on one end and push-to-connect female receiver on the other Composite body for resistance to impact and nickel-plated brass valve for resistance to corrosion Maximum operating pressure of 145 psi at a working temperature range of 32 to 158 degrees F Complies with Council of the European Union 2002/95/EC (RoHS), 1907/2006 (REACH), and 97/23/EC (PED) standards for safety