Compression fittings

Compression fittings join pipe with a nut and olive, so no soldering or special tools are needed - just two spanners. They suit copper pipe and, with pipe inserts, plastic pipe. Ideal for repairs, isolation points and anywhere a flame is not practical.

FAQs

Do compression fittings need PTFE tape?

Not on the nut thread. Compression joints seal on the olive. Some installers add a little tape or jointing compound on the olive on older pipe.

Can compression fittings be reused?

The fitting body and nut can usually be reused, but fit a new olive each time the joint is remade on new pipe.

How tight should a compression fitting be?

As a guide, hand-tight plus about one full turn with a spanner for a new olive, holding the fitting body still. Nip up a little more only if it weeps.

Can I use compression fittings on gas?

Gas work in the UK must be done by a Gas Safe registered engineer, who will choose suitable fittings.