Push-to-pull compression fittings

British manufacturer Hepworth Building Products (founded 1936 in Doncaster) introduced these fittings under the brand Hep2O in 1980.

John Guest (Established in 1961, West Drayton, UK) developed the Speedfit push-fit connector for compressed air use in 1974, and introduced plumbing fittings in 1987.

[2] These fittings are white plastic, and are unscrewable to replace components, like Hep2O, but also have a push-release mechanism.

In the US, several different brands are available: Sharkbite, PlumBite, Nibco Push, which are all brass, demountable, similar to the Pegler Tectite design.

In the US, Legend Valve make a single-use push-fit system, and Sharkbite have one called EvoPex.

The pipe end should be square so it sits against the stop in the fitting and does not cause turbulence in the flow of water.