General description Push-fit couplings are an economical, quick, and easy way to create your own workshop ring main air supply, as well as pipework for water, beverages, and inert gas supplies. The plastic push-fits are a lightweight solution that will not corrode, making them ideal for professional workshops. Technical specifications Size: 1/2 inch PSI Range Temperature 1°C - 64°C: 170 PSI PSI Range Temperature 65°C and above: 100 PSI ISO 9001:2008 compliant ANSI/NSF - 61 certified Includes 5 pieces Other information Unique collet design for quick and easy connection and disconnection.