MDPE Pipe Fittings
Working with MDPE pipe? Make sure the connection is just as reliable as the pipe itself with BES’s comprehensive range of MDPE pipe fittings. Whether you’re installing water services, gas supplies or working on contaminated ground projects, you’ll find the fittings you need in one place. We stock trusted brands including Electrofusion, Polyfast, FloPlast, Primofit and Puriton, with sizes and connection types to suit both domestic and commercial installations.
With strong stock depth and next-day delivery available, sourcing MDPE fittings is straightforward when you shop at BES.
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Every Type Of MDPE Pipe Fitting In One Place
You name a specific type of MDPE pipe fitting, and there's more than a good chance we'll have it available. You can use the filter options on the side menu to find the MDPE pipe fitting you need. If you're already familiar with the BES catalogue and know the exact fittings you need, grab the code, and get it added to your basket immediately with BES Quick Shop.
Whether you need a few spare fittings to have at hand or you're going to be working with mixed sizes across an installation, our MDPE pipe fittings range has every common fitting size you could need.
Elbows
Available in sizes from 20 mm to 180 mm, our MDPE elbows range suits water, gas, gas & water and contaminated site systems. Each elbow has precise specifications listed.
Couplings
Available in over 40 lengths and styles, our MDPE coupling range is sure to have the fitting you need for the job at hand. We recommend looking at the SIZE options in the left menu.
Tees & Tapping Tees
For branching off a main run, our MDPE tee range includes below-ground equal, equal, branch, branch reduced, female branch and male branch tees. We also stock universal electrofusion tapping tees in multiple size combinations, ideal when connecting into an existing main.
Adaptors & Transition Fittings
Our adaptor range includes male and female threaded adaptors, stop cock adaptors and universal transition fittings. Straight and bent transition fittings are available to help bridge between pipe materials cleanly.
Adaptor Sets & Reducing Sets
Adaptor and reducing sets make stepping between pipe sizes simple. Whether reducing from 50mm to 20mm or stepping between common domestic sizes, these sets are built for straightforward installation. We offer a wide range of adaptor sets, including adaptor sets for copper pipes and mid-blue, light blue, dark blue, red, light-green, dark green and light-grey adaptor sets.
End Caps, Stop Ends & End Plugs
Need to temporarily or permanently seal a line? Our MDPE end caps, stop ends and end plugs are available in multiple sizes, giving you flexibility on site. We recommend looking at the SIZE options in the left menu to find the end caps you need.
Valves & Control
Our range also includes MDPE stop cocks, gas distribution valves and double check valves — helping manage flow and isolate sections of pipework when needed.
Inserts, Liners & Stiffeners
Pipe liners and stiffeners are essential when using compression fittings on MDPE pipe. Options such as Polyfast plastic pipe stiffeners help maintain pipe shape and ensure a proper seal under pressure.
Clips, Sleeves & Tools
Supporting products include pipe clips, GRP riser sleeves for gas pipework, C ring wrenches, hex keys and pipe cutters - giving you everything needed to complete an installation properly.
MDPE Colour Coding – What’s The Difference?
MDPE pipe is colour-coded depending on the application. Blue is for potable water, yellow for gas, and black for contaminated ground or general applications.
Always ensure fittings and pipework are suitable for the intended service before installation.
Installation Basics For MDPE Compression Fittings
A secure MDPE connection relies on correct preparation. The pipe should be cut square, fully inserted into the fitting and used with the correct liner or insert. Once tightened correctly, compression fittings provide a strong mechanical seal suitable for underground and above-ground use, depending on the system design.
Pressure Ratings & Compatibility
Many MDPE fittings in this range are rated up to 12 bar, depending on size and manufacturer. Always check product specifications before installation. Transition fittings allow connection between MDPE and materials such as copper, threaded steel and other pipe systems where required.
Fast And Free Delivery
For over 50 years, BES has supplied pipe fittings and underground services products to the trade. We focus on reliable brands, practical stock ranges and fittings that perform properly once installed. We offer free delivery on qualifying mainland UK orders, and our teams prioritise getting the fittings and other parts you need delivered in a hurry.
If you need help sourcing a specific pipe fitting, call us on 08000 801090, and we'll be happy to assist.
FAQs
What is the difference between blue and black MDPE pipe?
Blue MDPE pipe is used for potable water supply. Black MDPE is typically used for contaminated ground or general-purpose applications. Yellow MDPE is used for gas installations.
Can MDPE fittings be used underground?
Yes, MDPE compression fittings are commonly used for underground water and gas supply installations.
Are MDPE fittings suitable for gas installations?
Yes, certain MDPE fittings are suitable for gas systems. Always ensure fittings are rated for gas use and that installation is carried out by appropriately qualified professionals.
Do I need a pipe insert or liner with MDPE fittings?
Yes, when using compression fittings, a pipe liner or stiffener should be inserted into the MDPE pipe to maintain its shape and ensure a secure seal.