Denlok Product Range & Specifications
Naylor Denlok Product Range
Naylor Denlok® NS range from DN400 to DN1200
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Naylor Denlok NS range of jacking pipes consists a vitrfied clay jacking pipe with parallel ends and a rebated accurate joint interface.
All NS range of pipes consists of a coupling manufactured from 316 stainless steel, a LoknSlip seal and floor grade chipboard thrust ring.
Each pipe supplied will have all seals and a stainless steel sleeve factory fitted with the thrust ring supplied separate in a cover to protect the material from the weather elements.
DN400 - DN600
Naylor Denlok® NC range from DN150 to DN300
NC Range DN150
DN150 jacking pipewith EPDM seals and an injection moulded polypropylene sleeve and integral thrust ring, all elastomer conforms to the requirements of EN681-1.
A vitrified clay jacking pipe which is suitable for the construction of house connection installed by trenchless technology.
Naylor DN150 Denlok can be connected directly to Naylor DN150 Densleeve using the factory fitted Denlok coupling removing the need for any special connections.
NC Range DN200-DN300
Naylor Denlok NC range of jacking pipes consists of a vitrified clay pipe with parallel end faces and a square accurate machined seal interface.
All pipes have a factory fitted 316 stainless steel coupling which incorporates a moulded EPDM elastomer seal, each seal has an integral EPDM thrust ring, which transmits the jacking forces during pipe installation, all elastomer conforms to the requirements of EN681-1.
By precision machining of the seal interface the coupling will withstand a 2.4 bar internal and external pressure allowing installation below the water table and protection from lubrication systems during pipe installation.
DN150
DN200 - DN300
Naylor Revit range from DN225 to DN500
Naylor Revit the special designed pipe for use by the '3' Pass Guided Auger Boring Installtion Techique.
Naylor Denlok NS range of jacking pipes consists a vitrfied clay jacking pipe with parallel ends and a rebated accurate joint interface.
All Revit NS range of pipes consists of a coupling manufactured from 316 stainless steel a LoknSlop seal and floor grade chipboard thrust ring.
Each pipe supplied will have all seals and a stainless steel sleeve factory fitted with the thrust ring supplied separate in a cover to protect the material from the weather elements.
Naylor DenChem range from DN150 to DN300
For pipelines needing to operate at high temperatures - up to 103 deg c - the DenChem range is ideally suitable. Special ceramic pipes capable of withstanding higher temperatures and full resistance to Alkaline and Acid attack can now be offered for microtunnelling. Applications within the chemical, pharmaceutical, food and dairy processing as well as brewing industries can be accommodated. High temperature chemical effluents resulting from process or cleaning operations can be handled with confidence.
Ducting - DN150 to DN1200
Denlok® pipes are widely used in the No-Dig installation of ducting for high voltage electrical cables and fibre optics.
Naylor Denlok Specifications
Quality Assurance
Naylor Drainage manufactures its products under the control of an approved Quality Assurance System complying with the requirements of BS EN9002:2008. Naylor Drainage Ltd is a Registered Firm of Assessed Capability (BSI Certificate No FM1420).
Third Party Assurance
Denlok is Third Party Certified by:
- BSI Quality Assurance under Licence No 20173
- CE07 in accordance with Directive 93/68/EC
- MPA NRW Germany - Licence No 210001169-01-01
- PSB Singapore - Licence No 02235
- CPRU Brunei - Licence No STD3/003
CE Conformity
Naylor Drainage Vitrified Clay Pipe conforms to European Standard: EN295-10.
Component Specification
All Denlok pipes and assemblies are manufactured in accordance with
BS EN295-7
- 'Requirements for vitrfied clay pipes and joints for pipe jacking'
Denlok pipes and joint assemblies are manufactured in accordance with
BS EN12889:2000
- 'Trenchless construction and testing of drainage and sewers'.
LoknSlip 4.5 Bar Seal
Denlok and Revit pipes above diameters DN300 incorporate the new LoknSlip NS pipe seal.
Seal Design and Function
LoknSlip is designed as a sliding seal that is located in the pipe end rebate. No lubricant is required on either the seal or stainless steel sleeve as lubricant is enclosed within the sliding mantel. As the male spigot is inserted into the female sleeve the seal is compressed creating a positive 4.5 bar internal and external pressure.
The mantel rolls over the seal during jointing reducing friction to a minimum and acts as a cushion between the spigot and sleeve limiting differential movement under transverse shear loads once the joint is completed. The design optimises joint performance and provides an exceptionally high level of operational reliability.
LoknSlip is available in either EPDM or Nitrile certfieid to EN681-1.
Root Infestation
Due to the high contact pressure LoknSlip reduced the risk of root infestation through the joint allowing for pipe installation under mature trees.