The Naylor Hathernware FCR (Fully Chemically Resistant) Sleeve system of DN100, 150, 225, and 300 plain-end chemical stoneware pipes and fittings with Band-Seal chemical couplings, was developed for highly aggressive effluent drainage and is marketed to the chemical, pharmaceutical and associated industries. All components of the FCR Sleeve system are manufactured to comply with the stringent requirements of BS EN295-1.

When installed in general accordance with the Naylor Sitework Instructions Booklet and chemical coupling installation instructions the Naylor FCR Sleeve system meets the latest technical requirements of Approved Document H - Sewers for Adoption.

Description

Clayware
Chemical stoneware clay plain-end pipes and fittings, manufactured in accordance with the requirements of BS EN295-1. The standard lengths of pipes are convenient for handling and laying to allow for flexible joints at sufficiently frequent intervals to enable the pipeline to withstand settlement or other ground movement after installation.

Band-Seal Chemical Couplings
Elastomeric Sleeve - Manufactured in high grade EPDM or Nitrile elastomers (depending on ground conditions) conforming to EN681-1.

Clamping Bands - Manufactured in a high corrosion resistant austenitic stainless steel to EN10088. Where external contamination demands a higher quality stainless this can be supplied to order.

Fluoropolymer Liner - A one-piece seamless FEP element located within the elastomeric sleeve. Expanded PTFE secondary seals ensure a leak tight joint between the FEP and the pipe. For the best results and to ensure a close fit between the liner and the pipe the FEP liner is heat shrunk on site. The liner and seal are chemically inert and solvent resistant to virtually all chemicals including solvents.

Joint Performance
Hathernware joint assemblies meet all the requirements of BS EN295-1. They accept angular deflection and shear resistance without leakage, when tested under an internal or external water pressure of 50kPa (5 metres head).

Aggressive Environments
Naylor Hathernware FCR is suitable for handling corrosive liquids and gases and withstands almost all industrial acids and corrosive agents at the usual concentrations. The pipes and fittings are internally coated with a clear feldspathic glaze to provide a smooth surface which is easily cleaned. The chemical stoneware body is strong and has good resistance to mechanical shock.

Specification
The following statement is a suitable clause for inclusion in contract specification:

Pipes and Fittings

Chemical stoneware clay, internally feldspathic glazed, fully chemically resistant plain-ended pipes and fittings (FCR Sleeve as manufactured by Naylor Hathernware, Clough Green, Cawthorne, Barnsley).

Availability
Hathernware FCR Sleeve is available directly from the manufacturer. Contact the Hathernware Technical Department for details: 01226 794058.

Structural Performance
Naylor Hathernware HT Sleeve pipes can usually be laid directly on a hand trimmed natural trench bottom with selected, excavated materials (Class D Bedding) used as backfill. In case of contaminated land, contact the Naylor Hathernware Technical department on 01226 794058.

Crushing Strengths
BS EN295-1 includes a variety of crushing strengths for each nominal size of pipe as it takes into account the strength requirements in various parts of Europe. As it is impracticable for any single manufacturer to offer pipes and fittings in the full range of strengths, Naylor Hathernware has standardised on the strengths shown in the table below.

Pipe Nominal Size (DN)	Crushing Strength kN/m	Standard Length (metres)
100	34	1.5
150	40	1.75
225	45	1.25
300	72	1.25

Range
A full system is offered from DN100 to DN300 with an extensive range of fittings, including bends, junctions and tapers, particularly suitable for industrial drainage applications.

Naylor Hathernware HT Sleeve system can be used in conjunction with other Naylor underground and with other above-ground systems. Connections are made by using purpose made connectors and adaptors or by use of Band-Seal couplings.

Pipe Trench Beddings
Depths of cover between which Naylor Hathernware HT Sleeve pipes conforming to BS EN295-1 can be laid, in any width of trench, are found in the Naylor Drainage Design Handbook.

Advantages
It is a major advantage of the Naylor Hathernware HT Sleeve system that the plain-end pipes can be quickly and easily cut to intermediate lengths on site and can still be jointed using Band-Seal Chemical Couplings. This feature retains the ease in jointing, reduces wastage and damage and is particularly cost effective.

Flexibility
The flexible Band-Seal Chemical Coupling joints ensure that the pipeline will accommodate minor settlement and ground movement without failure.

Strength
The specially formulated clay pipes and fittings are rigid and do not distort under loading. Their high inherent strength ensures stability even at extreme depths of cover.

Bedding Economy
Hathernware HT Sleeve pipes can often be laid on the natural, trimmed trench bottom or where not possible on a 50mm bed of inexpensive granular material such as recycled aggregates. As dug material can be used for the backfill, all resulting in significant savings in granular bedding materials.

Chemical Resistance
The Chemical Resistance Chart gives details of the resistance of the HT Sleeve system to a range of chemicals but it is advisable to consult the Naylor Hathernware Technical Department on 01226 794058 for more specific advice, particularly where temperatures are above ambient or a combination of chemicals are involved.

Durability
The Hathernware HT Sleeve system is extremely durable. For design purposed, a chemical stoneware clay pipeline can be considered to have unlimited life.

Water Jetting
The Hathernware HT Sleeve system, when installed in general accordance with the Naylor Sitework Instructions Booklet is guaranteed for the lifetime of the system against penetration of the pipe wall caused by high pressure water jetting when operated with the following maximum parameters:

Pressure - 7500psi (510Bar)

Flow rate - 20gals/min (1.5Ltrs/sec)

Time - Static for 5 minutes

Pipe Lengths and Delivery
Naylor Hathernware HT Sleeve Pipes are supplied in easy-to-handle lengths. They are delivered in convenient packs with optional mechanical offloading equipment available on the delivery vehicle.

Easy Cutting
Where shorter lengths of pipe are required, pipes may be easily cut on site.