Plumbing Supplies
8 categories · 36 product ranges
Everything you need for first fix, second fix, repairs and maintenance — copper tube and fittings, push-fit and plastic pipework, compression and solder joints, valves, soil and waste, taps, cylinders and water treatment. Order online at trade prices and we deliver anywhere in UK mainland, so you can keep vans stocked and jobs moving without leaving site.
Shop plumbing supplies by category
Copper Tube & Fittings
- Copper Pipe
- End Feed Fittings
- Solder Ring Fittings
- Compression Fittings
- + 1 more
Push-fit Fittings
- Plastic Push-fit
- Brass Push-fit
- Speedfit
- Tectite
- + 1 more
Plastic Pipe & Fittings
- Barrier Pipe
- Waste Pipe
- Overflow Pipe
- MDPE Pipe
Soil & Waste
- Soil Pipe
- Soil Fittings
- Waste Traps
- Waste Fittings
- + 1 more
Valves
- Ball Valves
- Gate Valves
- Check Valves
- Service Valves
- + 1 more
Taps & Mixers
- Pillar Taps
- Bib Taps
- Mixer Taps
- Outside Taps
Tanks & Cylinders
- Cold Water Tanks
- Hot Water Cylinders
- Expansion Vessels
- Tank Accessories
Water Treatment
- Filters
- Softeners
- Scale Reducers
- Magnetic Filters
Featured in plumbing supplies
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Shop plumbing supplies by brand
Buying plumbing supplies from Plumb Supply
Choosing pipe and fittings
Most domestic hot and cold work still runs in 15mm and 22mm copper, jointed with end feed, solder ring or compression fittings. Copper suits exposed pipework and high-temperature circuits, and end feed gives the neatest finish where joints will be seen. Push-fit is faster where access is tight or where the system has to be drained and remade — barrier pipe is essential on heating circuits because it prevents oxygen ingress and the sludge that follows. Plastic waste runs in 32mm, 40mm and 50mm solvent weld or push-fit, with 110mm soil above and below ground. Check the fitting standard matches the pipe: push-fit and compression sizes are not always interchangeable between manufacturers.
Valves, isolation and controls
Fit isolation where it saves a future call-out: service valves on every tap and appliance connection, lever ball valves on flow and return, and drain cocks at the low points. Check valves and double check valves protect against backflow where a hose or filling loop is connected. On heating systems an inline magnetic filter and a proper dose of inhibitor do more for longevity than any single component — they capture magnetite before it reaches the pump or heat exchanger.
Ordering for site and stock
Trade accounts see their pricing on every product page, so estimating a materials list does not need a phone call. Standard UK mainland delivery is charged at a flat rate and is free over the threshold shown at checkout; heavy, long-length or palletised items are quoted separately. For a full plumbing schedule on a refurbishment or development, send the drawings or a takeoff through the project quote form and we will price the whole lot in one go.
Plumbing Supplies — frequently asked questions
What plumbing supplies can I order from Plumb Supply?
Copper tube and fittings, push-fit and plastic pipework, compression fittings, valves, soil and waste, traps, taps, cylinders, expansion vessels, water treatment and everyday plumbing consumables.
Do you sell to trade customers?
Yes. Apply for a trade account and your pricing shows on every product page, along with order history, VAT invoices and project quotations.
Can I order plumbing materials for delivery to site?
Yes — we deliver across UK mainland to a home, office or site address. Heavy, oversized or palletised items are quoted at checkout.
Should I use copper or push-fit pipe?
Copper is the usual choice for exposed pipework and higher temperatures; push-fit is quicker in tight or awkward spaces. Barrier pipe should always be used on heating circuits.
What's the difference between a gate valve and a ball valve?
A gate valve closes with a sliding gate and can seize or fail to shut off fully over time, while a ball valve uses a rotating bored ball that gives a more reliable, low-maintenance shut-off and a clear open/closed indication.
Read the full guide: A Guide to Plumbing ValvesWhat size pipe feeds a standard radiator?
Most domestic radiators are fed with 15mm pipe, with the pipework often stepping up to 22mm or 28mm nearer the boiler on larger systems.
Read the full guide: Plumbing Pipe Sizes ExplainedIs plastic pipe as good as copper for central heating?
Oxygen barrier plastic pipe is widely used on heating circuits, particularly underfloor heating, and performs well. Copper remains standard for boiler primary connections and anywhere near a significant heat source.
Read the full guide: Copper Pipe vs Plastic Pipe: Which Is Best?Are push-fit fittings as reliable as compression fittings?
Both are reliable when fitted correctly. Push-fit relies on a clean, square, deburred pipe end and the correct insert; compression relies on the correct tightening torque and a sound olive. Neither should be buried without an access point.
Read the full guide: Push-Fit vs Compression Fittings: Which Should You Use?Plumbing Supplies advice
All advice & guides →A plain-English rundown of the plumbing valves you'll come across on a typical domestic system, and what each one does.
What the common UK pipe sizes are used for, plus the difference between metric and older imperial pipework.
A practical comparison of copper and plastic pipe covering cost, durability, installation and where each performs best.