FERNCO PIPE CONNECTORS AND COUPLINGS FERNCO FLEXIBLE COUPLINGS

Transcription

1 Flex-Seal Couplings Ltd Endeavour Works Newlands Way Valley Park Wombwell Barnsley Yorkshire S73 0UW Tel: Fax: website: www APPROVAL INSPECTION TESTING CERTIFICATION TECHNICAL APPROVALS FOR CONSTRUCTION Agrément Certificate 91/2615 Product Sheet 1 FERNCO PIPE CONNECTORS AND COUPLINGS FERNCO FLEXIBLE COUPLINGS PRODUCT SCOPE AND SUMMARY OF CERTIFICATE This Certificate relates to Fernco Flexible Couplings, for jointing pipes from 38 mm to 248 mm external diameter in sanitary pipework, underground drainage, sewers and rainwater applications. The couplings are for use with treated effluents normally found in sewers and drains. AGRÉMENT CERTIFICATION INCLUDES: factors relating to compliance with Building Regulations where applicable factors relating to additional non-regulatory information where applicable independently verified technical specification assessment criteria and technical investigations design considerations installation guidance regular surveillance of production formal three-yearly review. KEY FACTORS ASSESSED Strength the couplings will have adequate strength to resist loads associated with installation and service (see section 4). Performance of joints the joints will not be adversely affected by thermal expansion or contraction and will remain watertight under conditions of normal pipeline movement (see section 5). Resistance to chemicals the couplings will have adequate resistance to the type and quantity of chemicals likely to be found in domestic sewage (see section 7). Resistance to elevated temperatures the couplings will have adequate resistance to the temperatures likely to be found in domestic sewage (see section 8). Durability the couplings will have a service life equivalent to that of the pipework and fittings with which they are being used (see section 12). The BBA has awarded this Agrément Certificate to the company named above for the product described herein. This product has been assessed by the BBA as being fit for its intended use provided it is installed, used and maintained as set out in this Certificate. On behalf of the British Board of Agrément Date of First issue: 14 December 2009 Brian Chamberlain Greg Cooper Originally certificated on 26th March 1991 Head of Approvals Engineering Chief Executive The BBA is a UKAS accredited certification body Number 113. The schedule of the current scope of accreditation for product certification is available in pdf format via the UKAS link on the BBA website at Readers are advised to check the validity and latest issue number of this Agrément Certificate by either referring to the BBA website or contacting the BBA direct. British Board of Agrément tel: Bucknalls Lane fax: Garston, Watford mail@bba.star.co.uk Herts WD25 9BA 2009 website: Page 1 of 8

2 Regulations In the opinion of the BBA Fernco Flexible Couplings if used in accordance with the provisions of this Certificate, will meet or contribute to meeting the relevant requirements of the following Building Regulations: The Building Regulations 2000 (as amended) (England and Wales) Requirement: B2 Requirement: H1 Requirement: H3(1)(3) Requirement: Regulation 7 Internal fire spread (linings) The product can meet the necessary requirements, provided the installation stipulations are met. See section 9.2 of this Certificate. Foul water drainage A system incorporating the product will convey the flow of water and minimise the risk of blockage or leakage. See section 3.1 of this Certificate. Rainwater drainage A system incorporating the product will convey the flow of water and minimise the risk of blockage or leakage. See section 3.1 of this Certificate. Materials and workmanship The product is acceptable. See sections 4 and 12 and the Installation part of this Certificate. The Building (Scotland) Regulations 2004 (as amended) Regulation: 8(1)(2) Fitness and durability of materials and workmanship The use of the product satisfies the requirements of this Regulation. See sections 4, 11 and 12 and the Installation part of this Certificate. Regulation: 9 Building Standards construction Standard: 2.6 Spread to neighbouring buildings The product can meet the necessary requirements, provided the installation stipulations are met. See section 9.3 of this Certificate. Standard: 3.5 Existing drains A system incorporating the product can satisfy this Standard. See section 3.1 of this Certificate. Standard: 3.6(a)(b) Surface water drainage A system incorporating the product will meet the relevant requirements of this Standard, with reference to clause 3.6 (1)(2). See section 3.1 of this Certificate. Standard: 3.7(b)(c) Wastewater drainage A system incorporating the product will meet the relevant requirements of this Standard with reference to clause 3.7 (1)(2). See section 3.1 of this Certificate. (1) Technical Handbook (Domestic). (2) Technical Handbook (Non-Domestic). The Building Regulations (Northern Ireland) 2000 (as amended) Regulation: B2 Fitness of materials and workmanship The product is acceptable. See sections 4 and 12 of this Certificate. Regulation: B3(2) Suitability of certain materials The product is acceptable. See section 11 of this Certificate. Regulation: E3 Internal fire spread Linings The product can meet the necessary requirements, provided the installation stipulations are met. See section 9.3 of this Certificate. Regulation: N3(a)(i) Sanitary pipework (a)(ii)(b) The product meets the relevant requirements of this regulation. See section 3.1 of this Certificate. Regulation: N4(a)(i)(b) Underground foul drainage The product meets the relevant requirements of this Regulation. See section 3.1 of this Certificate. Regulation: N5(a)(i)(b) Rain-water drainage The product meets the relevant requirements of this Regulation. See section 3.1 of this Certificate. Construction (Design and Management) Regulations 2007 Construction (Design and Management) Regulations (Northern Ireland) 2007 Information in this Certificate may assist the client, CDM co-ordinator, designer and contractors to address their obligations under these Regulations. See section: 13 Installation (General). Page 2 of 8

3 Non-regulatory Information NHBC Standards 2008 NHBC accepts the use of Fernco Flexible Couplings, when installed and used in accordance with this Certificate, in relation to NHBC Standards, Chapter 5, Sections Substructure and ground floors and Sub-section 5.3 Drainage below ground. General This Certificate relates to Fernco Flexible Couplings for use with sanitary pipework, underground drainage, sewers and rainwater pipes. Technical Specification 1 Description 1.1 Fernco flexible straight and adaptor couplings (see Figure 1) consist of moulded synthetic polymer sleeves and stainless steel clamps to ASTM A 240. Screws comply with ASTM A 493. Figure 1 Fernco Flexible Couplings for pipes with similar diameters for pipes with different diameters 1.2 The couplings are made from thermoplastic compound and their dimensional flexibility allows them to seal a range of pipe diameters. 1.3 The couplings and adaptors can be used on many pipe materials including plastic, cast iron, asbestos cement, clay, concrete, steel and fibreglass. 1.4 End clamps are provided as standard in corrosion resistant grade 300 stainless steel. The housings and bands are to ASTM A 240, Grade 301. The screws are to ASTM A 493, Grade 305. Clamps manufactured to European Grade are available upon request. 1.5 The couplings can be used for jointing two pipes of either similar or differing external diameters. They are available in a number of different sizes ranging from 38 mm to 248 mm nominal external diameter (see Tables 1 and 2 and Figures 3 and 4). Typical connections are shown in Figure 2. Figure 2 Typical connections Page 3 of 8

4 1.6 The stainless steel clamps are tightened by the adjustable screws to the recommended torque of 7 Nm. The maximum recommended torque is 8 Nm. 1.7 Continuous quality control carried out during manufacture includes hardness testing and visual and dimensional checks. 1.8 The couplings are suitable for jointing pipes of the following materials: cast iron to BS : 1990, BS EN 877 : 1999 grey or ductile iron to BS EN 877 : 1999 asbestos-cement to BS EN : 1997 polyvinyl chloride to BS 4660 : 2000 and BS EN : 1998 vitrified clay to BS EN 295, Parts 1 to 3 : 1991 and BS EN : 1995 ductile iron to BS EN 545 : 2006 ductile iron to BS EN 598 : 2007 fibre cement to BS EN : Table 1 Straight couplings Part No. Nominal diameters Width Suitable for pipe size range A B C SIDE A=B Figure 3 Straight couplings B C A Page 4 of 8

5 Table 2 Adaptor couplings Part No. Nominal diameters Width Suitable for pipes size ranges A B C SIDE A SIDE B Figure 4 Adaptor Couplings B C A Page 5 of 8

6 2 Delivery and site handling The couplings are supplied in different diameters. The couplings bear a mark showing the manufacturer s product code. Reasonable care in handling and storage is required to avoid damage. Assessment and Technical Investigations The following is a summary of the assessment and technical investigations carried out on Fernco Flexible Couplings. Design Considerations 3 General 3.1 Fernco Flexible Couplings are suitable for use in drainage systems used in domestic, commercial and public buildings and installations designed in accordance with BS EN : 2000 and BS EN : 2000 for the conveyance, by combined or separate systems, of surface water or domestic sewage as is permitted to be discharged into public sewers by the Water Industry Act 1991, Chapter 56, the Sewerage (Scotland) Act 1968 and the Water and Sewerage Services (Northern Ireland) Order The couplings are suitable for use in drainage systems designed in accordance with the relevant parts of BS EN 752 : The couplings can be installed and the trench backfilled as drain laying proceeds. 4 Strength The product has adequate strength to resist loads associated with installation and subsequent use in the situations defined in this Certificate. 5 Performance of joints 5.1 The performance of joints will not be adversely affected by thermal expansion or contraction when correctly made. 5.2 Joints made using the couplings remain watertight under conditions of pipeline movement in excess of those expected to occur, in accordance with the relevant standards (see section 3.2). 6 Flow characteristics Joints made using the couplings have no significant effect on the flow characteristics associated with underground drainage systems. 7 Resistance to chemicals The material used in the couplings is suitable for use with the pipes and fittings listed in section 1.8 and has adequate resistance to the type and quantity of chemicals likely to be found in domestic sewage. 8 Resistance to elevated temperatures The product has adequate resistance to the temperatures likely to be found in domestic sewage. 9 Behaviour in relation to fire 9.1 In common with other plastics materials, Fernco Flexible Couplings are combustible and in a fire may ignite and burn. The adaptors are modular synthetic polymer and their burning will result in the release of toxic gases. Consideration should be given to the need for protective fire-resistant ducting when assessing the fire risk in a building, particularly where large quantities of couplings may otherwise be exposed. 9.2 In England and Wales the detailed requirements are given in Approved Document B. 9.3 In Scotland and Northern Ireland, pipes which penetrate separating or compartment walls or floors must be constructed or protected so that, in the event of fire, the fire resistance required for the wall or floor is maintained, and they must be fire-stopped. 10 Practicability of installation Installation of the product can be carried out easily under normal site conditions. 11 Maintenance A system using these couplings can be cleared without difficulty using standard rodding equipment. When installed in accordance with this Certificate, the coupling is protected by the pipe wall and is, therefore, unlikely to be damaged by cleaning devices such as toothed root cutters. Page 6 of 8

7 12 Durability When used within the conditions and recommendations given in this Certificate the couplings are expected to have a life expectancy equivalent to that of the pipework. Installation 13 General Fernco Flexible Couplings must be installed in accordance with the Certificate holder s installation instructions, general good practice for trenchwork and any specific site requirements. 14 Procedure 14.1 When inserting a junction or length of pipe into an existing pipeline, the pipe ends should be cut square. Any irregularities on the external surface, eg mould joint lines on the barrel of iron pipes, may require smoothing to achieve a watertight joint Before making the connection the coupling and the pipe ends must be clean To make a joint the coupling is positioned centrally over the pipe ends and the gap The fitting of the coupling is completed by the alternate tightening of the adjustable screws of the steel clamps to the recommended torque setting (see section 1.6) The Certificate holder recommends that before backfilling or concealing the joint it is tested to a maximum pressure of 0.5 bar. Technical Investigations The following is a summary of the technical investigations carried out on Fernco Flexible Couplings. 15 Tests Tests were carried out to determine: dimensional accuracy ease of jointing resistance of joints to hydrostatic pressure, shear or deformation withdrawal and deflection effect of accelerated ageing thermal cycling and box loading. 16 Investigations 16.1 A factory visit was carried out to assess the effectiveness of the quality control procedure An examination was made of data relating to: resistance to hydrostatic pressure, shear or deformation adequacy of specifications effect of pipe tolerances chemical resistance practicability of installation durability A user survey was carried out to evaluate performance in use. Bibliography BS : 1990 Discharge and ventilating pipes and fittings, sand-cast or spun in cast iron Specification for spigot and socket systems BS 4660 : 2000 Thermoplastics ancillary fittings of nominal sizes 110 and 160 for below ground gravity drainage and sewerage BS EN : 1991 Vitrified clay pipes and fittings and pipe joints for drains and sewers Requirements BS EN : 1991 Vitrified clay pipes and fittings and pipe joints for drains and sewers Quality control and sampling BS EN : 1991 Vitrified clay pipes and fittings and pipe joints for drains and sewers Test methods BS EN : 1995 Vitrified clay pipes and fittings and pipe joints for drains and sewers Requirement for special fittings, adaptors and compatible accessories BS EN 545 : 2006 Ductile iron pipes, fittings, accessories and their joints for water pipelines Requirements and test methods BS EN : 1997 Fibre-cement pipes for sewers and drains Pipes, joints and fittings for gravity systems BS EN 598 : 2007 Ductile iron pipes, fittings, accessories and their joints for sewerage applications Requirements and test methods BS EN 752 : 2008 Drain and sewer systems outside buildings BS EN 877 : 1999 Cast iron pipes and fittings, their joints and accessories for the evacuation of water from buildings Requirements, test methods and quality assurance Page 7 of 8

8 BS EN : 1998 Plastics piping systems for non-pressure underground drainage and sewerage. Unplasticized poly(vinylchloride) (PVC-U) Specifications for pipes, fittings and the system BS EN : 2000 Gravity Drainage Systems inside Buildings Sanitary pipework, layout and calculation BS EN : 2000 Gravity Drainage Systems inside Buildings Roof drainage, layout and calculation ASTM A 240 : 2009 Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications ASTM A 493 Standard Specification for Stainless Steel Wire and Wire Rods for Cold Heading and Cold Forging Conditions of Certification 17 Conditions 17.1 This Certificate: relates only to the product/system that is named and described on the front page is granted only to the company, firm or person named on the front page no other company, firm or person may hold or claim any entitlement to this Certificate is valid only within the UK has to be read, considered and used as a whole document it may be misleading and will be incomplete to be selective is copyright of the BBA is subject to English law Publications and documents referred to in this Certificate are those that the BBA deems to be relevant at the date of issue or re-issue of this Certificate and include any: Act of Parliament; Statutory Instrument; Directive; Regulation; British, European or International Standard; Code of Practice; manufacturers instructions; or any other publication or document similar or related to the aforementioned This Certificate will remain valid for an unlimited period provided that the product/system and the manufacture and/or fabrication including all related and relevant processes thereof: are maintained at or above the levels which have been assessed and found to be satisfactory by the BBA continue to be checked as and when deemed appropriate by the BBA under arrangements that it will determine are reviewed by the BBA as and when it considers appropriate In granting this Certificate, the BBA is not responsible for: the presence or absence of any patent, intellectual property or similar rights subsisting in the product/system or any other product/system the right of the Certificate holder to manufacture, supply, install, maintain or market the product/system individual installations of the product/system, including the nature, design, methods and workmanship of or related to the installation the actual works in which the product/system is installed, used and maintained, including the nature, design, methods and workmanship of such works Any information relating to the manufacture, supply, installation, use and maintenance of this product/system which is contained or referred to in this Certificate is the minimum required to be met when the product/system is manufactured, supplied, installed, used and maintained. It does not purport in any way to restate the requirements of the Health & Safety at Work etc Act 1974, or of any other statutory, common law or other duty which may exist at the date of this Certificate; nor is conformity with such information to be taken as satisfying the requirements of the 1974 Act or of any statutory, common law or other duty of care. In granting this Certificate, the BBA does not accept responsibility to any person or body for any loss or damage, including personal injury, arising as a direct or indirect result of the manufacture, supply, installation, use and maintenance of this product/system. British Board of Agrément tel: Bucknalls Lane fax: Garston, Watford mail@bba.star.co.uk Herts WD25 9BA 2009 website: Page 8 of 8