Brennan PCNY2404-08-08 PBT Push-to-Connect Tube Fitting, Adapter, 1/2" Tube OD x 1/2" 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 polybutylene terephthalate (PBT) for resistance to solvents, shrinkage, heat, and impact Working pressure of up to 290 psi Operating temperature ranges from -4 to 175 degrees F