Polyfit is a fully demountable and reusable pushfit system for hot and cold plumbing and radiator central heating systems. The radial sealing force provides a more secure watertight seal and the 3-pin protection feature ensures fittings are not accidentally demounted when installing through joists, floors or walls. Pipe stiffeners must be used when using plastic pipe ; these are not required for copper pipe.

Polyfit must not be used for gas, oil, compressed air, solar heating, or primary or gravity pipe works from solid fuel back boilers.