Brennan PCDT2404-06-02-B Nickel-Plated Brass Push-to-Connect Tube Fitting, Adapter, 3/8" Tube OD x 1/8" NPT Male Adapter for connecting pipes or fittings of different types Push-to-connect fitting connects to pipes or tubing on one end and has an NPT male connector on the other Made of nickel-plated brass for durability and corrosion resistance Working pressure of up to 290 psi Operating temperature ranges from -4 to 175 degrees F