Use to connect to any combination of copper, PEX, CPVC, or PE-RT pipes For use with water, grease, fuels, LP and natural gas, refrigeration, instrumentation, and hydraulic systems in low and medium pressure pipe line connections Designed for use with Brass, copper and iron pipe Designed and manufactured to SAE (Society of automotive engineers) thread standards Temperature rating: -65° to 250°F Pressure rating: 1200 psi maximum Machined, 1-piece Brass body