1、BSI Standards PublicationBS 8561:2013Specification for mechanicalfittings for use in the repair,connection and renovationof pressurized water supplypipelines Requirementsand test methodsPublishing and copyright informationThe BSI copyright notice displayed in this document indicates when the documen
2、twas last issued. The British Standards Institution 2013Published by BSI Standards Limited 2013ISBN 978 0 580 73512 7ICS 23.040.40; 23.040.45The following BSI references relate to the work on this document:Committee reference B/504Drafts for comment 11/30237359 DC, 12/30270677 DCPublication historyF
3、irst published December 2013Amendments issued since publicationDate Text affectedBS 8561:2013 BRITISH STANDARDContentsForeword ii1 Scope 12 Normative references 13 Terms and definitions 24 Classifications 45 Technical requirements 56 Performance requirements for fittings 8AnnexesAnnex A (informative
4、) Fittings for PE100 Basis for determination of end-loadsresistance requirements 24Annex B (normative) Test methods 29Bibliography 47List of figuresFigure 1 External profile of grooved steel/ductile pipe: surface defects 19Figure A.1 The principal forces exerted on a joint due to positive internalpr
5、essure 25Figure B.1 Test assembly for all fittings excluding flange adaptors 30Figure B.2 Test assembly for flange adaptors 31Figure B.3 Pressure/life testing graph 35Figure B.4 Stress relaxation curves at a range of temperatures 37Figure B.5 Predicted 20 C bolt-load relaxation curve 39List of table
6、sTable 1 Classifications for fitting/joint types 5Table 2 Performance testing of couplings and flange adaptors on pipematerials other than PE 11Table 3 Performance testing of repair clamps 14Table 4 Performance testing of under pressure tees (UPT), pipe saddles andjoint encapsulation units 15Table 5
7、 Performance testing of couplings and flange adaptors on PE pipematerials including barrier pipe 18Table 6 Flange bolt torques in Nm (1.5 nominal torque to seal at therespective flange PN and DN) 21Table B.1 Pull-out test force at 80/60 C for Type 1 fittings for PE100 pipe 42Table B.2 Pull-out test
8、force at 80/60 C for Type 2 fittings for PE100 pipe 43Table B.3 Pull-out test force at 23 C for Type 1 fittings for PE100 pipe 44Table B.4 Pull-out test force at 23 C for Type 2 fittings for PE100 pipe 45Summary of pagesThis document comprises a front cover, an inside front cover, pages i to iv,page
9、s 1 to 48, an inside back cover and a back cover.BRITISH STANDARD BS 8561:2013 The British Standards Institution 2013 iForewordPublishing informationThis British Standard is published by BSI Standards Limited, under licence fromThe British Standards Institution, and came into effect on 31 December 2
10、013. Itwas prepared by Technical Committee B/504, Water supply. A list oforganizations represented on this committee can be obtained on request to itssecretary.Presentational conventionsThe provisions of this standard are presented in roman (i.e. upright) type. Itsrequirements are expressed in sente
11、nces in which the principal auxiliary verb is“shall”.Commentary, explanation and general informative material is presented insmaller italic type, and does not constitute a normative element.Contractual and legal considerationsThis publication does not purport to include all the necessary provisions
12、of acontract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legalobligations.In particular, attention is drawn to the following regulations. The commentary inthis British Standard reflects the state of the regulations at the time ofp
13、ublication.Water fittingsIn this document, the following national regulations, which apply torequirements relating to plumbing systems in premises to which a supply ofpublic mains water (municipal water supply) has been provided, are referred toas the “Water Fittings Regulations 1”: The Water Supply
14、 (Water Fittings) Regulations 1999, as amended, in Englandand Wales; Scottish Water Byelaws 2004, in Scotland; and The Water Regulations (Northern Ireland) 2006, in Northern Ireland.Public water suppliesThese regulations refer to the standards of wholesomeness for water qualityparameters where the w
15、ater is intended for public supply. In this standard, thefollowing national regulations, which apply standards of wholesomeness towater provided from the public mains supply (municipal supply), are referred toas the “Water Quality Regulations 2”: The Water Supply (Water Quality) Regulations 2000 as
16、amended, in England; The Water Supply (Water Quality) Regulations (Northern Ireland) 2007 asamended, in Northern Ireland; The Water Supply (Water Quality) (Scotland) Regulations 2001 as amended,in Scotland; and The Water Supply (Water Quality) (Wales) Regulations 2010, in Wales.BRITISH STANDARDBS 85
17、61:2013ii The British Standards Institution 2013Private water suppliesThese regulations refer to the standards of wholesomeness for water qualityparameters in premises where the water for human consumption or foodproduction has been sourced from a private supply. In this standard, thefollowing natio
18、nal regulations, which apply standards of wholesomeness towater provided from private water sources (non-municipal supply), are referredto as the “Private Water Supplies Regulations 3”: The Private Water Supplies Regulations 2009 as amended, in England; The Private Water Supplies Regulations (Northe
19、rn Ireland) 2009 as amended,in Northern Ireland; The Private Water Supplies (Scotland) Regulations 2006 as amended, inScotland; and The Private Water Supplies (Wales) Regulations 2010 as amended, in Wales.BRITISH STANDARD BS 8561:2013 The British Standards Institution 2013 iiiBRITISH STANDARDBS 8561
20、:2013This page deliberately left blankiv The British Standards Institution 20131 ScopeThis British Standard specifies the requirements and associated test methodsapplicable to fittings with flexible, flexible restrained and restrained jointsintended for connection to existing water supply pipes for
21、the purposes oflocalized repair, new branch connections or pipeline rehabilitation.NOTE These fittings may additionally connect to new pipe materials to replacefaulty sections of existing pipe.It also specifies requirements for materials and dimensions and givesperformance requirements for joints.It
22、 applies to fittings in the diameter range of DN 50 to DN 1 800 made for useon the following pipe materials other than polyethylene (PE): grey iron; ductile iron; steel; polyvinyl chloride (PVC); fibre cement; and glass-reinforced polyester (GRP).It applies to fittings in the diameter range of DN 63
23、 to DN 1 000 made for useon the following PE pipe material: PE80 material (medium-density polyethylene MDPE); PE100 material (high-density polyethylene HDPE); and PE barrier pipe for contaminated land 4.This specification applies to fittings including (but not necessarily limited to)pipe couplings,
24、flange adaptors, under pressure tees (including any similarcomponents permanently installed on mains as part of flow isolation techniquesor to facilitate equipment access into mains), repair clamps, pipe saddles andjoint encapsulation units for both potable and non-potable applications.It applies to
25、 fittings which seal to both the existing water supply pipe, includingcorroded or physically degraded pipe surfaces, and any new pipe by mechanicalcompression of elastomeric seals, though pressure actuated sealing mayadditionally be incorporated.It also gives performance requirements for fittings de
26、signed to provide axialrestraint when installed on the existing pipe. Joint design and gasket shapes arenot covered by this British Standard.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in thisdocument and are indispensable for its application. For d
27、ated references, onlythe edition cited applies. For undated references, the latest edition of thereferenced document (including any amendments) applies.Standards publicationsBS 4190, ISO metric black hexagon bolts, screws and nuts SpecificationBS EN 545, Ductile iron pipes, fittings, accessories and
28、 their joints for waterpipelines Requirements and test methodsBS EN 681-1:1996, Elastomeric seals Material requirements for pipe joint sealsused in water and drainage applications Part 1: Vulcanized rubberBRITISH STANDARD BS 8561:2013 The British Standards Institution 2013 1BS EN 1092-1, Flanges and
29、 their joints Circular flanges for pipes, valves, fittingsand accessories, PN designated Part 1: Steel flangesBS EN 1092-2, Flanges and their joints Circular flanges for pipes, valves, fittingsand accessories, PN designated Part 2: Cast iron flangesBS EN 1563, Founding Spheroidal graphite cast irons
30、BS EN 10025-2, Hot rolled products of structural steels Part 2: Technical deliveryconditions for non-alloy structural steelsBS EN 10088-2, Stainless steels Part 2: Technical delivery conditions forsheet/plate and strip of corrosion resisting steels for general purposesBS EN 12201-1:2011, Plastics pi
31、ping systems for water supply, and for drainageand sewerage under pressure Polyethylene (PE) Part 1: GeneralBS EN 12201-2:2011, Plastics piping systems for water supply, and for drainageand sewerage under pressure Polyethylene (PE) Part 2: PipesBS EN 14901, Ductile iron pipes, fittings and accessori
32、es Epoxy coating(heavy duty) of ductile iron fittings and accessories Requirements and testmethodsBS EN ISO 1167-1:2006, Thermoplastics pipes, fittings and assemblies for theconveyance of fluids Determination of the resistance to internal pressure Part 1: General methodBS EN ISO 3506-1, Mechanical p
33、roperties of corrosion-resistant stainless steelfasteners Part 1: Bolts, screws and studsBS EN ISO 9445 (all parts), Continuously cold-rolled stainless steel Tolerances ondimensions and formBS ISO 3384, Rubber, vulcanized or thermoplastic Determination of stressrelaxation in compression at ambient a
34、nd at elevated temperaturesOther publicationsN1 WIS 4-52-01/02, Polymeric anti-corrosion (Barrier) coatings The use ofpolymeric anti-corrosion (Barrier) coatings. Water UK.N2 WIS 4-52-03, Anti-corrosion coatings on threaded fasteners. Water UK.3 Terms and definitionsFor the purposes of this British
35、Standard, the following terms and definitionsapply.3.1 allowable operating pressure (PFA)maximum hydrostatic pressure that a component is capable of withstandingcontinuously in serviceNOTE In BS EN 12201 (Parts 1 and 2), the term nominal pressure (PN) at 20 C isused in place of PFA.3.2 couplingfitti
36、ng providing connection between two spigot ends capable of absorbing adegree of ground/pipe movement and which provides a sufficient mechanicalsupport to resist the self-weight of the pipe, the water contained therein, andthe external imposed loadings (e.g. shear loadings from traffic/backfill/groun
37、dmovement)NOTE Couplings can be classified as Class A or Class B, see Table 1 for more details.BRITISH STANDARDBS 8561:20132 The British Standards Institution 20133.3 depth of engagementwhen jointed, the distance between the end of the spigot and the face of thesocket of the coupling or flange adapt
38、orNOTE This is also known as the “insertion depth”.3.4 flange adaptorfitting providing connection between a spigot and a flange capable ofabsorbing a degree of ground/pipe movement and providing sufficientmechanical support to resist the self-weight of the pipe, the water containedtherein and the ex
39、ternal imposed loadings (e.g. shear loading fromtraffic/backfill/ground movement)NOTE Flange adaptors can be classified as Class A or Class B, see Table 1 for moredetails.3.5 flexible non-restrained jointjoint that permits significant angular deflection both during and afterinstallation with no mean
40、s provided to prevent separation of the assembledjoint3.6 flexible restrained jointjoint that permits significant angular deflection both during and afterinstallation with a means provided to prevent separation of the assembled jointNOTE 1 Flexible restrained joints can be classified as Type A or Ty
41、pe B, see Table 1for more details.NOTE 2 Some flexible restrained joints are intended for PE pipe in addition toother pipe materials and should be classified according to joints of fittings forpolyethylene pipes for that application, see Table 1 for more details.3.7 joint angular deflectionangle bet
42、ween the axis of the spigot and one end of the fitting that a singleflexible joint can accommodate3.8 joint encapsulation unitfitting installed around a leaking pipe joint that seals to both sections of pipebarrel either side of the joint forming a pressure-tight container to contain theleakage3.9 m
43、anufacturers recommended bolt torquebolt torque required for any specific installation condition, e.g. specific to pipematerial3.10 manufacturers recommended maximum bolt torquemaximum value for any specific size of fitting3.11 nominal pressure (PN)alphanumerical designation related to a combination
44、 of mechanical anddimensional characteristics of a component of a pipework system, used forreference purposes, which comprises the letters PN followed by a dimensionlessnumber3.12 pipe nominal size (DN)numerical designation of the size of pipe, which is a whole numberapproximately equal to the actua
45、l dimension in millimetresNOTE For existing pipework in old imperial size pipe standards the nearest metricDN reference should be used.BRITISH STANDARD BS 8561:2013 The British Standards Institution 2013 33.13 pipe saddlefitting attached and sealed to part of a pipes surface to facilitate a connecti
46、onto pipe with an outlet size greater than DN 50NOTE 1 It is usually secured by clamp bands and seals only around the area thatthe connection is made. It may incorporate some form of valve to facilitate underpressure drilling and is usually used for smaller branch size threaded connectionsrather tha
47、n for under pressure tees.NOTE 2 Pipe saddles are not generally regarded as suitable for use on PE pipematerial due to the visco-elastic properties of the pipe material affecting long-termsealing characteristics.3.14 repair clampfitting installed around a leaking pipe barrel to effect a seal on both
48、 local andcircumferential pipe defectsNOTE Repair clamps are not generally regarded as suitable for use on PE pipematerial due to the visco-elastic properties of the pipe material affecting long-termsealing characteristics.3.15 restrained jointjoint for PE pipe that permits no angular deflection bot
49、h during and afterinstallation with a means provided to prevent separation of the assembled joint3.16 setting gapwhen jointed, the distance between the ends of the spigots in a coupling or theend of the spigot and the flange face for a flange adaptor3.17 under pressure tee (UPT)fitting installed on/around a pipe to create a branch connection usuallyterminating in a flange outletNOTE 1 The fitting, along with other equipment and fittings, f
