JDP offers a comprehensive range of vitrified clay pipe for underground drainage; a fully socketed system is offered 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
- Foul sewerage
- Surface water
- Road drainage
Vitrified clay pipes and fittings manufactured in accordance with the requirements of BS EN 295-1. Kitemark No. KM 20173.
All pipes consist of a factory fitted grade 316 stainless steel sleeve a 5 bar rated EPDM self-lubricated seal.
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- 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.
- 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.
- 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.
- Test the pipe and joint after installation of every three pipes in accordance with BS EN 195 Cluase 5.18: Air Tightness.
Clay Jacking Pipes
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.
Traditional 'Open Cut' installations
This form of Installation is characterised by the high level of physical work that is carried out.
- Excavation of a trench, removal of spoil, temporary supports
- Laying and jointing of pipeline on specified bedding material
- Refilling the trench, compacting fill materials, removal of surplus spoil
- Restoring the above ground infrastructure
Typically 50 times the amount of spoil that the new pipeline will occupy has to be removed and then refilled again after the pipeline is laid.
As well as being very labour intensive, various skills possibly from several companies and authorities may need to be co-ordinated.
Trenchless Technology Installations
Access using trenchless techniques also requires surface work, but not to the scale of the open trench approach. In comparison trenchless projects are characterised by:-
- Less indirect costs, because surface access is less disruptive
- Projects are generally of shorter duration, therefore social and environmental costs are considerably reduced
- Public awareness of disruption is lessened due to concealment of the works
Slip Lining - the replacement pipeline is winched through an existing pipe and the void between old and new is filled with grout
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