Buy Underground Drainage Systems, Drainage Pipe & Fittings

We source our Drainage Pipe and Fittings from a UK Manufacturer. All products are tested, approved and kite marked to prove their quality and acceptability for use in the UK. They are selected for their mix of high quality and low price making these fittings the best bang for buck possible.


What is an Underground Drainage Pipe?

picture of underground sewer pipes in a stillage

At EasyMerchant we keep a huge range of underground drainage pipes products in stock in 110mm, 160mm, 200mm, 315mm, and 400mm size diameters, meaning we can source almost any product for any underground drainage pipes system. Ready for quick and accurate delivery at a great price.

The sewerage system provides an efficient means of removing sewage and foul discharge from above ground drain installed in the home. The range of products includes a variety of bends, couplings, gullies, cover and inspection chambers that integrate with EasyMerchant's stocks of above and below ground drainage products that will suit most installations.

At EasyMerchant we highly recommend you chose a sewer product system that is Kitemarked and manufactured to BS EN 1401 Standards.

product picture of Underground sewer bottle gully large with removable trap and square lid

What Are Drain Products Used For?

In this case; surface water drainage underground systems and services, and underground sewer product systems. A sewer or foul sewer is an underground system for transporting sewage and rainwater from the home and/or commercial buildings (although not stormwater) to treatment centres or disposal.

What Sizes Do These Ranges Come In?

At EasyMerchant we stock a massive range of drains product in sizes, from 110mm (4 inch), 160mm (6 inch), 200mm (8 Inch), 315mm (12 inch) and 400mm (16 Inch) products. The range of products come in 3 metre of 6 metre lengths. Bends come in a range of angles and the manhole bases come in a range of sizes from 320mm and 470mm with 110mm and 160mm outlets. The manhole base risers are 225mm high. Some sizes may take longer for delivery than others. The most commonly used size is 110mm.

What Different Items Are Available In This Range?

category page picture of 4 lengths of 110mm sewer pipe

At EasyMerchant we stock a big range of product with all the necessary products, this includes 3m lengths, drainage bends in double and single socket forms in degrees from 15 to 90 at a price you won't find anywhere else. We don't stock cast iron or clay, as it's too heavy for efficient delivery, and cast iron is rare and expensive.

We also stock products such as roddable and back inlet bottle gullies, hoppers, integral hoppers as well as low-back P traps and regular drainage traps. EasyMerchant also sells drainage products that make the installer's lives easier, such as the adjustable bends and adjustable bottle gullies.

We also have additional associated products in the drainage ranges such as non-return valves, flexible couplings/adaptors, and even warning tapes and sewer blockage alarms! All supplied at a fantastic low price. All the fixings, sealants, lubricants, and accessories are also available allowing you to buy any products you need for the job.

How are these Installed? Are there any guidelines I should follow?

The underground drainage pipes system is based around the "ring seal push-fit" system (usually found in the socket of the bend or length). Usually, a lubricant will be used around the seal of the socket of the fitting and a properly chamfered end in the correct diameter, or spigot end of the bend will be inserted into the socket of the fitting.

This is a simple process, but issues can occur when these instructions are not adhered to! Do not use fairy liquid to lubricate the seals, and always make sure the end of the length is nicely chamfered with no sharp edges. Check that the seal has not fallen out, been displaced or damaged.

EasyMerchant only supplies PVC drainage products, and not cast iron or any other material.

Who Installs Underground Drainage Supplies? Is it something a DIYer can do?

Technically anyone can install domestic drainage products, along with as the proper guidelines are adhered to. This counts for a DIY-er, to a plumber, to a builder, groundworker, landscape gardener or a civil engineer, etc. Always follow government guidelines (read The Building Regulations 2010, Drainage and Waste Disposal - Approved Document H) and check with local authorities before carrying out any work on drainage systems.

Order From Us for High-Quality Drain Supplies

EasyMerchant offers high-quality builder supplies at wholesale prices coupled with top quality customer services and support. Free delivery is available for all orders above £120/ex VAT. Feel free to create an account when placing your order. Delivery is usually made in 2-3 days from receipt of order, with next day options available also.

easymerchant drainage building plastic supplies underground drainage pipe supplies