Choosing the Right Plumbing Pipe Fittings
At County Building Supplies, we supply plumbing pipe fittings for professional plumbers, heating engineers, builders and DIY customers. Whether you're repairing a leaking connection, installing new pipework or upgrading a bathroom, choosing the correct fittings is essential for a reliable plumbing system.
Our range includes compression fittings, push-fit fittings, end feed and solder ring fittings, brass valves, MDPE fittings and sanitary waste connections.
Compression vs Push-Fit Pipe Fittings
Compression and push-fit fittings are popular options for connecting plumbing pipework, but they use different connection methods.
- Compression fittings: Typically use a compression nut and olive to form a watertight seal. They are commonly used with copper pipe and compatible plastic pipe systems, where permitted by the fitting manufacturer.
- Push-fit fittings: Allow compatible pipework to be connected without soldering. They can be convenient for repairs and new installations, provided the correct pipe, inserts and fittings are used.
County stocks compression elbows, reducing fittings and other plumbing connections in commonly used sizes, including 15mm and 22mm.
End Feed vs Solder Ring Fittings
End feed and solder ring fittings are commonly used for joining suitable copper pipework.
End feed fittings require solder to be applied during installation, while solder ring fittings contain a pre-positioned ring of solder. Both require appropriate pipe preparation, heating and installation techniques.
These connections should be made by someone competent in soldered plumbing work, following the relevant product instructions and safety precautions.
Brass Fittings, Valves & MDPE Connections
Brass fittings are commonly used for threaded plumbing connections, reducing pipe sizes and connecting valves or appliances. County stocks brass reducing bushes, bibcocks and other brassware for suitable applications.
For underground cold water supplies, MDPE fittings are designed to connect compatible MDPE pipework. Always check the pipe diameter, pressure rating and suitability for drinking water where applicable.
Bathroom Waste Fittings & Pan Connectors
Our pipe fittings range also includes bath, sink and shower waste connections, alongside toilet pan connectors.
When replacing a waste fitting, check the pipe diameter, connection type and available installation space. Correctly matched components help maintain effective drainage and reduce the risk of leaks.
Choosing the Correct Fitting Size
Before ordering, identify the pipe material, diameter and connection type. Common plumbing sizes include 15mm and 22mm for copper pipe, while threaded brass fittings are often specified in imperial sizes such as 1/2in and 3/4in.
Thread sizes and pipe diameters are not always directly interchangeable. Check the product specification rather than relying on the stated size alone.
Need Advice?
Not sure which pipe fittings you need? Visit your local County Building Supplies branch or contact our team for help identifying suitable fittings, checking compatibility and confirming product availability.
Frequently Asked Questions – Pipe Fittings
What's the difference between compression and push-fit fittings?
Compression fittings generally use a nut and olive to create a seal, while push-fit fittings use an internal gripping and sealing mechanism. Both can be suitable for plumbing installations when used with compatible pipework and according to the manufacturer's instructions.
Can compression fittings be used on plastic pipe?
Some compression fittings can be used with compatible plastic pipe, usually with the correct pipe insert. Always check the pipe and fitting manufacturers' instructions before installation.
Can push-fit fittings connect to copper pipe?
Yes, certain push-fit fittings are designed to connect to copper pipe as well as compatible plastic pipe. The pipe must be correctly prepared, and the fitting must be approved for the intended application.
What's the difference between end feed and solder ring fittings?
End feed fittings require solder to be added during installation, while solder ring fittings contain solder within the fitting. Both are used for suitable copper pipe connections and require correct preparation and heating.
What size pipe fittings do I need for 15mm copper pipe?
For standard 15mm copper tube, choose fittings specifically designed for 15mm copper pipe. Check the connection type and product specification, particularly when connecting to threaded valves or other pipe materials.
Are plumbing fittings suitable for drinking water?
Not every fitting is suitable for drinking water. For potable water installations, choose fittings and materials with the appropriate approvals and follow applicable water regulations.
Can ordinary plumbing fittings be used for gas?
No. Only fittings specifically approved for the relevant gas application should be used. Gas work must be carried out by a suitably qualified Gas Safe registered engineer where legally required.
Do you stock compression and brass pipe fittings?
Yes. County Building Supplies stocks compression fittings, brass reducing fittings, valves and a wider selection of plumbing connections. Product availability may vary by branch.