The 1/2 in. Polypropylene Compression Union is a polypropylene compression union fitting that allows in-line disconnection of the tubing run for service without disturbing surrounding fittings. Polypropylene construction provides strong chemical resistance for acids, bases, and chlorinated water service where brass would corrode or leach. Technical Specifications Specification Value Body Material Polypropylene Connection Type compression Shape Union End Connections See product title for sizes Pressure Rating 500 WOG (brass) / 150 WOG (nylon/polypropylene) Temperature Range −20°F to 250°F (nylon/poly) / −20°F to 366°F (brass/SS) Key Features Polypropylene body — resists chlorine, dilute acids, and alkalis Non-metallic — safe for potable water and chemical process applications Light weight; will not corrode or rust Compression connection — no soldering, brazing, or special tools required Ferrule (sleeve) forms permanent seal on copper, brass, and compatible plastic tubing Reusable on copper tube; single-use on soft plastic tubing Allows in-line service disconnection without disturbing surrounding fittings Common Applications Standard in HVAC refrigerant and chilled-water piping, residential gas appliance connections, instrument tubing, water heater and boiler supply lines, and any application requiring a reliable tube-to-thread or tube-to-tube joint without soldering or brazing. Technical Resources Compression Fitting Sizing Chart — Tube OD to fitting size reference NPT Thread Tightening Reference — Proper thread engagement turns Brass Fitting Types and Sizes Guide — All fitting styles explained Cross-ReferencesThis part is an equivalent for industry part numbers 15-8P-0, 5016K566. Searching one of those? This is your match.
