Washing Machine Fittings
Reliable washing machine fittings are a must for a safe water supply, controlled isolation and adequate drainage. At BES, we supply a comprehensive range of fittings and accessories for professional plumbers, installers, and competent DIYers across domestic and light commercial installations.
Shop online for quality washing machine fittings from trusted brands and benefit from fast next-day delivery, Click & Collect and hassle-free 30-day returns, backed by exceptional customer support.
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A Comprehensive Range Of Water Supply & Isolation Fittings
Understanding that proper control of the water supply is critical, BES supplies a comprehensive selection of washing machine taps and valves to suit new installations, upgrades, and retrofits.
Washing Machine Taps
Our range includes straight, angled and tee washing machine taps in standard 15mm x 3/4" BSP configurations. Options include standard compression taps, push-fit taps for fast installation, press-fit (M Profile) taps for permanent pipework and taps with integrated check (non-return) valves to prevent backflow. Angled taps are ideal where space is limited, while tee taps allow a washing machine connection to be added to an existing pipe run.
Washing Machine Valves
For retrofit work, self-cutting washing machine taps and push-fit isolation valves allow installers to create a branch connection without draining down the system. Top valves include Self-Cutting Washing Machine Tap - 15mm x 3/4", Straight Washing Machine Tap 15mm Push-fit x 3/4" BSP and Angled Washing Machine Tap 15mm Push-fit x 3/4" BSP.
Dual Appliance Valves
Dual appliance washing machine taps allow two appliances, such as a washing machine and dishwasher, to share a single cold-water supply, reducing pipework and simplifying installation. A top choice is the Dual Appliance Washing Machine Tap - 15mm x 3/4" valve.
Reliable Washing Machine Hoses & Hose Accessories
Washing Machine Inlet Hoses
Washing machine inlet hoses connect the appliance to the water supply and are typically fitted with 3/4" BSP connections. At BES, we stock hoses in a range of lengths and colours, including blue hoses for cold water and red hoses for hot water, from 1.5m to 3.5m to suit different layouts. If you need help choosing the correct hose length, give us a call. It’s important to order the correct hose to help prevent kinking, strain on fittings and restricted water flow.
Drain Hoses, Extensions & Crooks
For wastewater discharge, we supply non-kink washing machine drain hoses, drain hose extension kits for longer runs and drain hose crooks to secure the hose into standpipes or traps. Choose from Washing Machine Drain Hose with Crook - 1.5m, Extending Washing Machine Drain Hose - 0.5 to 2m and Washing Machine Drain Hose with Crook - 2.5m.
Hose Connectors & Y-Pieces
Hose connectors allow hoses to be adapted, extended or shared between appliances. Our range includes straight and stepped hose connectors, threaded plastic and brass connectors, Y-piece connectors for dual appliance connections and overflow and hose connector combinations.
Hose Washers & Filters
Our selection includes standard 3/4" inlet hose washers such as the Washing Machine Inlet Hose Washers - 3/4" Pack of 10, In-line Hose Filter Washer - 3/4" and Inline Hose Filter Washer - 1/2". We also offer nitrile washers such as Nitrile Hose Washers - 1/2" Pack of 10.
Waste & Drainage Components
Washing Machine Traps
Washing machine traps prevent foul odours while allowing efficient drainage. Our fittings are compatible with standard 40mm waste pipework and common domestic layouts. Choose from Washing Machine Trap with Upstand - 40mm, McAlpine Standpipe Trap - 40mm, Washing Machine Half Trap with Adaptor - 1.1/2"/40mm and Washing Machine Trap Adaptor - 1.1/2"/40mm.
Sink Traps with Appliance Connections
For installations where the washing machine discharges into a sink waste, our twin-nozzle sink trap allows both the sink and the appliance to drain safely without compromising flow. On offer is also the popular McAlpine Sink P Trap - 1.1/2"/40mm, 3"/75mm Seal.
Washing Machine Wastes
Self-cutting washing machine wastes provide a quick way to add a waste connection to existing pipework, available in single or double versions for one or two appliances.
Twin Connectors & Straight Nozzles
Twin connectors, such as McAlpine’s Appliance Twin Connector - 1.1/2" or 40mm and straight nozzles, such as McAlpine’s WMF3 Multifit Straight Nozzle, make it easier to manage multiple appliance waste hoses, particularly in utility rooms with limited space.
Safety & Finishing Components
Water Block Valves
Our Water Block Shut Off Valve automatically stops the water supply if abnormal flow is detected. We also stock a reset device with which normal operation can be restored once the issue is resolved - Water Block Re-set Device.
Blanking Plugs
Our washing machine blanking plugs are used to seal unused 3/4" BSP outlets in order to prevent leaks and contamination in unused connections. Top choices include the McAlpine Blanking Plug and the Washing Machine Blanking Plug - 3/4" BSP.
Hose Fittings & Release Tools
Angled and straight hose fittings help adapt hose connections, while isolating valve release tools assist with maintenance and replacement work. Choose from popular options such as the Angled Hose Fitting - 3/4" F Nut x 3/8" Tail, Straight Hose Fitting - 3/4" F Nut x 3/8" Tail and Isolating Valve Release Tool.
Buying & Installation Guide: Washing Machine Fittings Explained
Most washing machines in the UK use standard 3/4" BSP threaded connections for both water inlet hoses and isolation taps. This means the majority of washing machine fittings are compatible across leading appliance brands, provided the correct pipe size and waste configuration are used.
When choosing fittings, consider:
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Water supply layout - straight, angled or tee taps, depending on access
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Isolation requirements - check valves or water block valves for added protection
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Hose length - long enough to avoid tension, but not excessively coiled
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Drainage method - standpipe, sink trap or self-cutting waste
Self-cutting valves and wastes are commonly used in retrofit installations, while tee taps and press-fit valves are preferred for planned plumbing work. Drain hoses should always be supported and secured to prevent movement during discharge.
If you are unsure about compatibility or installation, professional advice is recommended. A suitably qualified installer should always carry out gas or water system modifications.
Why Choose BES for Washing Machine Fittings?
At BES, our wide selection of washing machine fittings includes trusted brands such as FloPlast, McAlpine, Polypipe, and Thomas Dudley, as well as a variety of fittings to suit all plumbing setups.
We’re also committed to providing high-performance products at competitive prices, backed by expert support and fast delivery. Whatever your plumbing needs, BES has the fittings and accessories to ensure your installation goes smoothly.
For assistance or advice, contact us at 0800 801090.
Washing Machine Fittings FAQs
What size fittings do washing machines use in the UK?
Most washing machines use 3/4" BSP threaded connections for inlet hoses and taps, with 40mm waste pipe connections for drainage.
What is the difference between red and blue washing machine hoses?
Blue hoses are used for cold-water supplies, while red hoses are used for hot-water connections, where applicable.
Are washing machine fittings compatible with all brands?
In most cases, yes. Standard 3/4" BSP fittings are used by the majority of UK washing machine manufacturers.
Do I need a non-return valve for my washing machine?
A non-return (check) valve helps prevent backflow and is recommended in certain installations, particularly where local regulations or system design require it.
What’s the difference between a self-cutting tap and a tee tap?
A self-cutting tap creates a new connection on an existing pipe without cutting it, while a tee tap is installed into pipework during planned plumbing work.
How do I measure the correct hose length?
Measure the route from the water supply to the appliance, allowing gentle curves, avoiding tight bends or tension once the machine is in position.
Can two appliances share one water supply?
Yes, using a dual appliance washing machine tap or Y-piece connector, provided water pressure and system design allow it.