Compression Fittings | Plumbing Supplies

Find reliable, easy-to-install compression fittings for all your plumbing projects with our high-quality range at JJ Building Materials. Designed for strength, leak-free performance and long-term durability, each compression fitting is suitable for both domestic and commercial plumbing systems, making it a trusted choice for installers and DIY users alike.

15mm Compression Fittings for Everyday Plumbing

Our 15mm compression fittings are the most commonly used size in UK plumbing. Ideal for connecting copper or plastic pipework, these fittings provide a secure, watertight seal without the need for soldering. Whether you’re repairing pipe runs, installing radiators or upgrading household plumbing, our 15mm compression fittings deliver a strong and dependable connection.

Compression Pipe Fittings for Versatile Connections

Choose from a wide selection of compression pipe fittings, including elbows, tees, couplers and stop ends. Designed for simple installation with basic tools, these fittings are perfect for tight spaces, maintenance work and quick repairs. Each compression pipe fitting ensures reliable performance across hot and cold water systems.

Compression Valve Fitting for Precise Flow Control

Our compression valve fitting options include isolating valves, service valves and appliance valves — essential for safe, controlled water flow throughout your plumbing system. Easy to fit and highly durable, each compression valve fitting offers smooth operation and long-lasting performance, making maintenance and servicing simple.

Why Choose Compression Fittings from JJ Building Materials

High-quality compression fittings for copper and plastic pipe
Large range of shapes, valves and connectors
No soldering required — ideal for quick installation and repairs
Durable brass construction for maximum strength
Competitive pricing and fast UK delivery

FAQs

Are compression fittings reliable?

Yes. A correctly installed compression fitting provides a strong, leak-free seal suitable for both domestic and commercial plumbing.

Can I mix compression fittings with plastic pipe?

Absolutely — simply use appropriate inserts when connecting to plastic pipework with compression pipe fittings.

Do compression valves need maintenance?

A compression valve fitting typically requires minimal maintenance but should be checked periodically to ensure smooth operation.

Check out our other Plumbing Supplies and Waste & Pipeworks range at JJ Building Materials.