Favourites
Account
Basket
VAT:
Ex
Inc
45 years of trusted expertisePipe Connection Fittings
Filters
Shop By
Type
Brand
Colour
Length
Price
Please select your collection branch...
Please enter your delivery address...
Secure reliable, leak-free boiler installations and repairs with our comprehensive range of pipe connection fittings. Sourced for exact compatibility with major UK boiler manufacturers, these vital spare parts ensure swift and compliant system maintenance.
Showing 1—30 items of 187
Heating engineers and maintenance plumbers rely on high-quality pipe connection fittings to maintain the integrity of pressurised hot water and heating systems. Our selection encompasses everything from standard copper tails and isolation valves to manufacturer-specific manifold connectors and hydraulic block fittings. Built to withstand continuous thermal expansion and high system pressures, these brass and copper components are essential for replacing degraded parts during routine boiler servicing or emergency leak repairs. Stocking OEM (Original Equipment Manufacturer) and trusted compatible parts for brands like Worcester Bosch, Vaillant, and Ideal ensures you can execute a safe, first-time fix on site. By keeping an assortment of essential connection fittings and associated O-rings in the van, installers can minimise downtime and restore domestic heating promptly. For further technical guidance on selecting the correct boiler fittings, consult our frequently asked questions below.
Frequently Asked Questions
How do I identify the correct pipe connection fitting for a specific boiler?
The most accurate method for identifying the exact replacement fitting is to consult the boiler manufacturer's installation and servicing manual using the appliance's GC (Gas Council) number. Because pipe connection blocks and hydraulic manifolds vary significantly between boiler generations, matching the specific part number is critical to prevent leaks. If the manual is unavailable, our branch teams can cross-reference the boiler data plate to supply the correct OEM or approved compatible fitting.
Do I need to replace O-rings and washers when changing a boiler pipe fitting?
Yes, you should always replace the associated O-rings, washers, or fibre seals whenever you disturb a boiler pipe connection. Reusing old seals is a primary cause of slow weeping leaks after a repair, as the rubber or fibre degrades and flattens under pressure over time. Many manufacturer-specific pipe connection kits come complete with the necessary seals, but it is best practice for heating engineers to keep a comprehensive service kit of spare O-rings on hand to guarantee a watertight joint.
Can I use standard plumbing fittings on internal boiler connections?
While standard compression or push-fit plumbing fittings are suitable for external pipework leading up to the boiler isolation valves, internal connections usually require manufacturer-specific hydraulic parts. Boilers often feature proprietary clip-in connections, manifold blocks, and specific thread pitches that standard off-the-shelf plumbing hardware will not fit safely. Always use the designated boiler spares for internal repairs to maintain the appliance warranty and adhere to Gas Safe regulations.