Clay Pipes

This range is no longer available from JDP

Interested in a suitable alternative? Consider using ULTRA3 underground drainage system instead - the next generation of drainage systems.

A comprehensive range of vitrified clay pipe for underground drainage; from DN375 to DN600 in accordance with EN 295-1 System N, with an extensive range of pipes and fittings, including bends, junctions and tapers.

Features & Benefits

• Extremely durable
• Quick installation by manual pushfit operation
• Flexible joints allow for minor settlement
• Minimum granular bedding required
• Nitrile seals available for contaminated ground
• Accommodates controlled discharges up to 75°C

Applications

• Foul sewerage
• Surface water
• Road drainage

Aggressive environments

The standard pipes, polyester fairings and elastomeric sealing rings are resistant to all forms of attack from substances which are commonly encountered in public sewers. Where more aggressive effluents or environments are present, special sealing rings may be required. Alternatively Hathernware clay pipes should be considered. Hathernware is a specialist Chemical Drainage System that covers the most aggressive discharges and extreme conditions, including thermal shock – a phenomenon where extremes of temperature variation can put significant structural strain on a drainage system. Contact us for more information on using clay in aggressive environments.

Standards

Clayware

Vitrified clay pipes and fittings manufactured in accordance with the requirements of BS EN 295-1. Kitemark No. KM 20173.

Joints

All pipes consist of a factory fitted grade 316 stainless steel sleeve a 5 bar rated EPDM self-lubricated seal.

		Strength
Nominal Size (mm)	Standard Length	Crushing Strength FN (kN/m)	Class Number	Weight (kg/m)
375	2.0m	72	240	75
225	2.0m	48	128	125
300	2.0m	64	160	150
375	2.0m	80	160	235
400	2.0m	96	160	250

1. Check the pipes and fittings to ensure that they have suffered no damage, ensuring that the spigot and socket are clean and free of any grit.
2. Insert the spigot end into the stainless steel sleeve and lower the pipe on to the pipe bedding by the means of a cloth strap around the centre of the pipe. There is no requirement for any lubricant as EPDM seals are self lubricating.
3. Insert a suitable wooden packer into the stainless steel sleeve and pply an equal mechanical force onto the pipe end. The pipe is fully home in the sleeve when there is a 5mm gap between the sleeve and the pipe rebait.
4. Test the pipe and joint after installation of every three pipes in accordance with BS EN 195 Cluase 5.18: Air Tightness.

Vitrified clay pipes have been in production for over a 100 years meeting the needs of water borne sewerage systems. JDP offer a modern vitrified clay jacking pipe system that has been developed to meet the requirements of pipe installations by trenchless construction methods.

These systems may be used for a number of methods; Microtunneling (pipe jacking), Guided Auger Boring, Pipe Bursting, Pipe Eating and Slip Lining.

Features & Benefits

Existing networks of utility services are usually found in cities and crowded urban areas, where pipelines in need of replacement or expansion are located below roads and buildings or interwoven with other services. Trenchless Technology greatly reduces the need for surface excavation which in turn minimises traffic congestion and built environment disruption.

Trenchless Techniques

Pipe Jacking - spoil and water is removed by pumping as slurry

Guided Auger Boring - spoil is removed by an auger through a steel casing

Pipe Bursting - the existing pipeline is forced into bedding material by means of an expanding hydraulic cone at the head of the replacement pipeline

Pipe Eating - the existing pipeline is ground using a cutting head and fragments are removed by augers through the replacement pipeline

Slip Lining - the replacement pipeline is winched through an existing pipe and the void between old and new is filled with grout

Standards

All pipes and assemblies are manufactured in accordance with:

• BS EN 295-7 Requirements for vitrified clay pipes and joints for pipe jacking
• BS EN 12889: 2000 Trenchless construction and testing of drains and sewers