Denseal Clay Drainage
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The Naylor DENSEAL underground clay drainage system consists of DN150, 225, 300, 375, 400, 450, 500 and 600 socketed pipes (plus DN200 and DN250 for continental use) and a comprehensive range of fittings, with flexible, mechanical joints which are particularly suitable for foul sewerage and surface water as well as road drainage.
When installed in accordance with the sitework instructions the Naylor Denseal System meets the latest technical requirements of the Building Regulations, BS 8005 and 8301.
Denseal Clay Drainage Structural Performance
Denseal clay drainage pipes can usually be laid either directly on a hand-trimmed, natural trench bottom, or with only minimum bedding. Selected excavated material is often a suitable backfill.
Denseal Clay Drainage Availability - UK
Denseal clay drainage is available either directly from the manufacturer, from Naylor stocking depots or from hundreds of Merchant Stockists throughout Britain - contact Naylor Sales Department for details.
Denseal Clay Drainage Availability - Overseas
Naylor clay drainage products are exported throughout the world. Pipes are suitably packed or crated and delivery can be by containers as well as by conventional shipping services. Stocks are held by Agents or distributors in several countries - contact the Naylor Export Department on 01226 794028/4074 for details.
Denseal Clay Drainage Advantages
The flexible joints ensure that the pipeline will accommodate minor settlement and ground movement without failure. Vitrified clay drainage pipes and fittings are rigid and do not distort under loading. Their high inherent strength ensures stability under even the highest loadings. Denseal clay drainage pipes and "O" ring joints are unaffected by chemicals and bacteria normally found in sewage and have high resistance to attack from aggressive soils. Special purpose "O" ring elastomers can also be supplied on request. The Denseal clay drainage system is extremely durable: for design purposes, a vitrified clay pipeline can be considered to have unlimited life. Denseal pipes and joints will not distort, soften or embrittle, even when subject to extremes of temperature likely to be experienced in service.
Denseal Clay Drainage Short Lengths
Pipes are available in 0.6m and other lengths are available on request. These are particularly useful as rocker pipes building into manholes and other structures.
Denseal Clay Drainage Range - UK
| Pipe Nominal Size(DN) |
Standard Length (Metres) |
Number (per pack) |
Approx Weight (tonnes per pack) |
| 150 | 1.25 | 42 | 1.70 |
| 225 | 1.75 | 24 | 1.90 |
| 300 | 1.75 | 12 | 1.60 |
| 375 | 1.75 | 6/9 | 1.2/1.8 |
| 400 | 1.75 | 6 | 1.32 |
| 450 | 1.75 | 6 | 1.75 |
| 500 | 2.0 | 4 | 1.81 |
| 600 | - | - | - |
Denseal Clay Drainage Range - Continental Sizes
| Pipe Nominal Size (DN) |
Standard Length (Metres) |
Number (per pack) |
Approx Weight (tonnes per pack) |
| 200 | 1.6 | 24 | 1.348 |
| 250 | 1.6 | 24 | 2.164 |
A range of fittings is available including bends, junctions and tapers.
Denseal clay drainage can be used in conjunction with other Naylor systems especially the Densleeve clay drainage range.
Pipe lengths and pack sizes are standard at the time of publication but may vary due to changes in manufacturing facilities.