T: 01793 422 040

T: 01793 422 040

E: sales@draindepot.co.uk

About Water Service Pipes

Not all water pipes are the same, and if you are considering installing water pipes at a new property or replacing existing ones, there are different pipes for different uses and situations. Here we’d like to talk about what you need to get the job done right.  First of all, the standard pipe for installation at a property is known as blue medium density polyethylene (MDPE). It's used for potable water and only for cold water – precisely why it's coloured light blue.


These polyethylene pipes are laid underground, and sometime can be black inside. Installing them is straightforward as commonly used connectors and jointing is all it takes. Diameters range from 20mm up to 63mm, with four different diameters in between. It's possible to buy light blue potable water pipes in various coil lengths, but to a maximum of 150 metres, depending on requirements. For big jobs, it's advisable to use as long a length as possible, instead of several short ones, because this helps to avoid problems that may later arise with connectors, such as leaking.

The right fit

In terms of the mechanical fittings, those manufactured by Plasson are tried and tested and have been used to fit water pipes all around the world for well over half a century. Plasson fittings are popular because they're easy and simple to use and come with an inbuilt "O" ring seal. Simply insert the pipe liner into the pipe and slacken the nut until half the thread is visible. Push pipe into the body, through the nut, split ring and O-ring. Tighten the nut firmly using a Plasson pipe wrench. Watch video.

With Plasson mechanical fittings, compatibility with systems currently installed is not a problem and they can be used with any number of different pipes. They're made from virgin Polypropylene and so are strong and durable and will last, giving you high-quality solutions to complete a standard pipe installation at a property.

Plasson manufacture a large range of superior valves that will meet almost any pipe installation requirement, and again they go back a long way – they've been used in all kinds of applications for more than 45 years, demonstrating how reliable and safe they are, even in the most demanding and high pressure situations. Only the best materials are used in the manufacture of these valves and with the latest in sealing technology, they will last and last.

Depending on what you want for your installation, you can opt for any number of valve configurations, from the basic on-and-off control of water flow to air release valves, terminal fittings for hoses and more. They're easy to install, can be used in underground installations and comply with EU environmental regulations designed to help maintain and improve the quality of water.

Different pipes

Now we come to a different type of pipe: the black kind. These are especially for below ground dirty water, as well as above ground clean water, and can be installed above ground as they’re UV stable. Again, a wide variety of fittings is available to configure installation to fit a particular installation, and connecting the pipes is a relatively simple as they use the same Plasson fittings as the blue system.

What should you do if you’re planning to lay water pipes in land that’s contaminated? To avoid seepage of toxins into potable water pipes that could lead to illness if consumed, it’s recommended that Puriton barrier pipes are used. These are manufactured from polyehylene and aluminium, the inner and outer layers of polyethylene are formed over an aluminium layer which together offer barrier protection to drinking water, from ground contaminants. They come in eight different diameters that range from 25mm to 180mm, with a comprehensive range of fittings to provide a full contamination resistant system solution.

Installing and fitting Puriton pipes is a straightforward endeavour, with a number of top-quality compression fittings that are highly flexible and so allow ease of use in any kind of situation. They come with two "O" ring seals so that water never leaks out and, equally importantly, are resistant to contamination. These compression fittings include couplers, equal tees, reducers, adapters and more – everything you need for correct installation.

Proper potable water pipe installation also calls for blue water pipe ducting, and they're available in twinwall coils or lengths and three choices of diameter. The pipe lengths have a connector per each length and the coils come with a pre-cord that lets you pull draw rope and electric cables through them.

In the trenches

Finally a word about the trenches the pipes will be placed in. The official guidance is that they should be dug at least 750mm deep but not exceeding 1350mm. You must ensure that fine sand or ducting is used to place the pipes onto and they must be adequately protected from stones and other materials that could cause damage.

Additionally, check what diameter pipe is required by your local water authority, in most cases it will be 25mm or 32mm. At points where pipes are entering a property, they must go via a duct that runs directly from the point of entry to the floor level inside. You should also ensure the pipes are insulated where they’re vulnerable to low temperatures that could cause freezing. A stop valve inside the building and at floor level is required where the pipe ends, preferably near to where it enters the property.


Please wait while we add your product...

Proceed to Checkout

Please enter your details, so we can send your free guide