Compression Fittings
BES has supplied the trade with compression fittings for more than 50 years, offering one of the UK’s most comprehensive ranges for plumbing, heating and gas applications. Our catalogue covers brass, DZR, chrome, stainless steel, imperial, metric, Irish and specialist lead-line fittings, all supported by extensive stock, rapid dispatch and dependable technical guidance.
With hundreds of fittings available across adaptors, elbows, couplers, tees, tank connectors and more, BES helps you source the exact component you need for a reliable connection. Have a look at our full selection to find what compression fitting you need and get it in a hurry, with fast delivery on qualifying orders.
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What Is A Compression Fitting?
A compression fitting is used to join two tubes or pipes or a pipe to a fixture or valve without soldering. They are preferred when installing cold or hot water pipes or repairing gas or central heating systems.
Compression fittings consist of three parts: a nut, a ring and a seat. When the compression fitting gets tightened, it provides a watertight connection.
Helping You Find The Right Compression Fitting
Ensuring that your compression fitting suits the task at hand is important. That’s why BES prides itself on stocking as wide a range of compression pipe fittings as you’ll find anywhere online. Our range of compression fittings includes:
UK Fittings
We like to say we have every UK fitting you’d ever need in stock to ensure a secure connection for pipework. Our UK compression fittings range includes elbows, olives, couplers, connectors, reducing sets, compression nuts and many more.
Brass Fittings
No matter what your plumbing installation project involves, our large selection of brass compression fittings will have you covered, from elbows and nuts to tank and tap connectors.
DZR Fittings
Whether you need DZR fittings for commercial or residential construction, our collection includes adaptors, couplers, elbows, connectors, tees and stop ends designed for use in applications that deliver water consumption.
Chrome Fittings
BES supplies a large selection of chrome-plated fittings, including elbows, tees, sockets, couplers, gate valves, taps and even clips.
Imperial Fittings
The imperial fittings selection for use on LPG includes bulkhead coupling, compression nuts, elbows, olives, stop ends, straight adaptors or couplers and tees.
Metric Fittings
Similar to our imperial fittings range, our selection of metric fittings includes elbows, olives, straight couplers, and tees to be used on LPG.
Irish Fittings
Our Irish compression fittings are made of brass bodies and olives. These are for use with Irish copper pipes.
Lead Fittings
Our lead fittings collection includes brass compression coupling for joining lead pipes to copper tubes. The fittings in this range are not suitable for gas use.
Steel Fittings
Whether you need an adaptor, a coupling, a tee or an elbow, our stainless steel compression fittings collection is suitable for connecting pipes in natural gas and LPG applications.
A Truly Comprehensive Selection Of Compression Fittings
The BES range includes the following main product families, covering both standard and specialist applications:
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Adaptors - for transitioning between pipe sizes, materials or connection types.
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Compression nuts - replacement nuts for maintenance or repair.
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Couplers - straight connectors for joining pipework in line.
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Elbows - 90° and swept bends for directional changes.
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Compression fittings packs - convenient assortments for on-site work.
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Lead lines - transition fittings for lead-to-copper connections (not suitable for gas).
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Nuts - replacement nuts across sizes and materials.
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Olives – brass, copper or DZR olives to ensure a tight compression seal.
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Reducing sets – step-down solutions within a single fitting body.
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Stop ends – safe termination of pipework during installation or maintenance.
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Tank connectors – creating watertight connections to tanks or vessels.
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Tap connectors – for monobloc, standard and flexible tap connections.
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Tees – branching connections for distribution or appliance feeds.
We also stock a wide selection of backplates, blanking pieces, bushes, caps, gas fingers, hospital brackets, rings, saddle bands, screw-on brackets, spacing clips, spanners, spare packs, straight bodies and couplers.
Experience Is Everything For Us
Supplying those in the trade for over 5 decades, BES stocks a huge range of pipe fittings, pipe and tubing, clips and brackets, pipe insulation and pipe tools to ensure that any job that needs pipes has you covered. View our full range of pipe tubes & fittings here.
With free delivery on qualifying orders, over 15,000 products in stock, and an Excellent rating from Reviews.co.uk, you’re guaranteed to get what you need, when you need it, any time you shop at BES.
Need Help Finding A Compression Fitting?
If there is a specific item you’re not finding, please contact us, and we’ll be happy to help you source it or find something appropriate.
FAQs
What size compression fitting do I need for 15 mm copper pipe?
A standard 15 mm compression fitting is used. Ensure the fitting and olive match the pipe’s outside diameter.
Are brass compression fittings suitable for drinking water?
Yes, brass and DZR compression fittings are commonly used on potable water systems. Always verify product specifications.
Can compression fittings be reused?
Bodies and nuts can usually be reused, but olives should ideally be replaced to ensure a reliable seal.
What is the maximum pressure rating for compression fittings?
Ratings vary by fitting type and material. Refer to each product’s technical specification. Domestic water and heating pressures typically fall well within standard compression fitting capabilities.
Are compression fittings compatible with plastic pipe?
Yes, when used with the correct pipe inserts and manufacturer-approved combinations. Always check compatibility notes.
How can I tell if a compression fitting is leaking?
Look for beading or moisture around the nut. Slightly tighten the nut by quarter turns if needed. If leaking persists, disassemble, inspect the olive and pipe, and re-make the joint.
What tools are required to install compression fittings?
Two compression spanners or adjustable spanners, plus pipe cutters and deburring tools for pipe preparation.
Where should compression fittings not be used?
Avoid inaccessible areas or concealed locations, unless permitted by local regulations and accessible via inspection panels.