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MDPE Water Pipe & Fittings

Build Plumb Plastics supply a wide range of MDPE pipe and fittings for underground water supply, non-potable water transfer and gas distribution systems. Commonly referred to as Alkathene pipe, MDPE water pipe is widely used in the UK for service connections between water mains and individual properties.

We stock MDPE water pipe in a full range of sizes including 20mm, 25mm, 32mm, 40mm, 50mm and 63mm, with popular coil lengths such as 25m, 50m, 100m and 150m. Our range is suitable for domestic, commercial, agricultural and utility installations.

MDPE Pipe and Fittings for Water Supply

MDPE pipe and fittings are commonly used for underground water service connections because they are flexible, corrosion resistant and easy to install. We supply a wide range of MDPE water pipe coils, MDPE compression fittings and specialist barrier pipe systems to suit different site requirements.

Common MDPE Pipe Sizes

The most commonly used sizes for domestic and commercial water supply installations are 20mm, 25mm and 32mm MDPE pipe.

20mm MDPE pipe is typically used for smaller domestic water supply connections.

25mm MDPE pipe is the most common size used for residential water service pipe installations.

32mm MDPE pipe is often used where higher flow rates are required for larger properties, commercial premises or longer pipe runs.

We also supply larger pipe sizes including 40mm, 50mm and 63mm MDPE pipe for higher demand installations.

Blue MDPE Pipe for Potable Drinking Water

Blue MDPE pipe is designed for potable drinking water systems and is widely used for underground service connections between mains water networks and buildings. Blue MDPE water pipe is durable, flexible and resistant to corrosion, making it ideal for below-ground installations.

We stock a wide range of blue MDPE water pipe in popular coil sizes for domestic and commercial projects. Where required, MDPE pipe can also be installed above ground if protected within suitable ducting or conduit.

Many MDPE water pipes are rated up to 12.5 bar, depending on the diameter and product specification.

Black MDPE Pipe for Non-Potable Water

Black MDPE pipe is generally used for non-potable water applications including pumping mains, irrigation, agricultural installations, greywater systems and industrial water transfer. Its flexibility and resistance to ground movement make it suitable for a wide range of external applications.

Yellow MDPE Pipe for Gas Supply

Yellow MDPE pipe is manufactured specifically for gas distribution systems. These pipes are used in residential and commercial gas supply networks and are produced to meet the appropriate standards for safe gas transportation.

MDPE Compression Fittings

Alongside our pipe range we supply a comprehensive selection of MDPE compression fittings designed to provide secure, leak-free connections. Many MDPE fittings are manufactured to comply with WIS 4-32-11 and allow transitions between pipe materials such as polyethylene, copper, lead, PVC and galvanised iron, depending on the fitting used.

Barrier Pipe Systems for Contaminated Ground

For installations on contaminated land or brownfield sites, we supply specialist barrier pipe systems including Protecta-Line, Polyguard and Trigon. These systems incorporate a protective barrier layer designed to prevent contaminants from permeating the pipe wall and affecting potable water quality.

Barrier pipe products may comply with BS 6920 water quality testing and may be approved under Regulation 31 of the Water Supply (Water Quality) Regulations, depending on the manufacturer and product specification.

Why Buy MDPE Pipe from Build Plumb Plastics?

We supply high-quality MDPE pipe and fittings at competitive prices, with fast UK delivery available across our most popular ranges. All products are WRAS approved where stated, helping to ensure suitability for drinking water applications.

If you cannot find the exact MDPE pipe size, coil length or fitting you require, please contact our team for assistance on 01255 258525.

WRAS approved MDPE water pipe products

MDPE WATER, GAS AND ABOVE GROUND PIPEMDPE WATER, GAS AND ABOVE GROUND PIPEMDPE BARRIER PIPE AND FITTINGSMDPE BARRIER PIPE AND FITTINGSMDPE PIPE FITTINGSMDPE PIPE FITTINGS
MDPE stands for Medium Density Polyethylene. It is a type of plastic pipe that is commonly used for gas and water supply in the UK. It is known for its durability, flexibility, and resistance to corrosion and chemicals.
Yes, MDPE (medium-density polyethylene) pipe is safe for drinking water. It is commonly used for water supply and distribution systems, and has been approved by regulatory agencies for use in contact with drinking water. However, it is important to ensure that the MDPE pipe you are using is certified for use with drinking water and meets all necessary standards and regulations.
MDPE pipes are designed to last for up to 50 years, depending on the specific application and conditions. However, proper installation and maintenance can also affect the lifespan of the pipe. It is important to follow manufacturer guidelines and have regular inspections to ensure the longevity of the MDPE pipe.
The main difference between blue and black MDPE pipes is their intended use. Blue MDPE is typically used for potable water supply, while black MDPE is used for non-potable water, such as irrigation or wastewater. Additionally, blue MDPE is often used in underground applications, while black MDPE is more commonly used above ground.
MDPE (medium-density polyethylene) pipe has several advantages over other types of piping materials. It is lightweight, flexible, and easy to install. It is also resistant to corrosion, chemicals, and UV rays, making it ideal for use in a variety of applications, including gas and water distribution, irrigation, and sewage systems. Additionally, MDPE pipe has a long lifespan and requires minimal maintenance, making it a cost-effective choice for many projects.
HDPE is generally considered to be better than MDPE for most applications. HDPE has a higher density and is more rigid, making it stronger and more durable. It is also more resistant to chemicals and UV radiation. However, MDPE is more flexible and has better impact resistance, making it a better choice for some applications. Ultimately, the choice between HDPE and MDPE will depend on the specific needs of your project.
Yes, the MDPE pipe can be used underground. In fact, it is commonly used for underground gas and water supply lines due to its durability and resistance to corrosion. However, it is important to ensure that the MDPE pipe is installed correctly and meets all necessary safety standards.