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John Guest Speedfit Plumbing Supplies. Discover the wide range of JG Speedfit, a push-fit system from John Guest Ltd. It is designed for use with the plumbing of hot and cold water services and central heating applications, including pressurised and combi systems.

John Guest quick-connect and SharkBite fittings are both reliable and awesome fittings for emergency fixes.

Speedfit fittings can be connected onto chromium plated copper pipe if the chromium plating is completely removed to the full depth of the fitting. To ensure maximum grip, the fitting of a collet clip is recommended.

Speedfit® Fittings have been designed for use with Copper Pipe, Speedfit PEX Pipe, CPVC, and PEX Pipe conforming to US Plumbing Standards.

Can I Use SPEEDFIT For Central Heating? Yes these plastic fittings can be used to join to new or existing copper pipework (not chromed pipe though), they are suitable for use on central heating as well as domestic water plumbing.

25 years.

yes, always use an insert when installing Speedfit pipes as it supports the shape of the pipe.

Heating systems and plumbing systems installed in copper last longer. This is the traditional way to install plumbing and heating in the UK.

The pipe isn't cut properly. The insert isn't pushed all the way in. The pipe isn't fully connected to the fitting.

They can be used with plastic or copper pipe, and are reusable many times over.

No you do not use pipe inserts whilst using push fit on copper, but make sure you when using plastic barrier pipe, the best ones to use are the super seals.

Interestingly you can join copper and plastic with a lot of the same fittings; a lot of people don't realise you can join a bit of plastic pipe with a compression fitting.