1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationThermoplastics pipe and fitting systems for hot and cold water for domestic purposes and heating installations in buildingsPart 2: Specification for polybutylene (PB) pipe and as
2、sociated fittingsBS 7291-2:2010BS 7291-2:2010 BRITISH STANDARDnullublishing and copyright informationThe BSI copyright notice displayed in this docnullnullent indicates nullhen the docnullnullent nullas last issnullednullnull BSI 2010ISBN 97null 0 nullnull0 nullnullnullnull2 1InullS nullnullnull1nul
3、l0nullnull0null 91null1null0nullnull0The nullollonulling BSI renullerences relate to the nullornull on this standard: nullonullnullittee renullerence nullRInullnullnull Dranullt nullor conullnullent 09nullnull020nullnull7null Dnullnullublication historynullirst pnullnulllished nullay 1990Second edit
4、ionnull nullctonuller 2001Third editionnull nullnullne 200nullnullonullrth nullpresentnull editionnull April 2010nullmendments issued since publicationnullate Tenullt affected null BSI 2010 null iBS 7291-2:2010BRITISH STANDARDSummary of pagesThis docnullnullent conullprises a nullront conullernull a
5、n inside nullront conullernull pages i to inullnull pages 1 to 1nullnull an inside nullacnull conuller and a nullacnull conullernullnullontentsnullorenullord iii1 Scope 12 Nornullatinulle renullerences 1null nullaterials 2null nullB pipes 3null nullittings nullor nullB pipes 5null nullarnulling and
6、associated innullornullation 6nullnnenullesAnnenull A nullnornullatinullenull nullethod onull test nullor resistance to thernullal ageing 8Annenull B nullnornullatinullenull nullrystallinullationnull transnullornullation and conditioning: Test procednullre 9Annenull null nullnornullatinullenull null
7、ethod onull test nullor resistance to pnullll-onullt onullassenullnullled nulloints 9Annenull D nullinnullornullatinullenull nullnullidance on nullactory control procednullres 11Binullliography 13nullist of tablesTanullle 1 null Dinullensions onull nullB pipes hanulling nonullinal sinulles and onull
8、tside dianulleters consistent nullith those specinulled in BS nullN 10null74Tanullle 2 null Dinullensions onull nullB pipes hanulling nonullinal sinulles and onulltside dianulleters consistent nullith those specinulled in BS ISnull null0nullnull 4Tanullle nullnull1 null nullnullll-onullt test nullor
9、ces nullor nulloints onull pipes connullornulling to Tanullle 1 andnullor associated nullttings 10Tanullle nullnull2 null nullnullll-onullt test nullorces nullor nulloints onull pipes connullornulling to Tanullle 2 andnullor associated nullttings 11Tanullle Dnull1 null Applicanullility onull renulln
10、ullirenullents and test nullethods 12BS 7291-2:2010ii null null BSI 2010BRITISH STANDARDThis page deliberately left blanknull BSI 2010 null iiiBS 7291-2:2010BRITISH STANDARDnullorewordnullublishing informationThis part onull BS 7291 is pnullnulllished nully BSI and canulle into enullnullect on null0
11、 April 2010null It nullas prepared nully Snullnullconullnullittee nullRInullnullnullnull2nullnullnullnull Plasticspiping for hot and cold waternull nullnder the anullthority onull Technicalnullonullnullittee nullRInullnullnullnull Plastics piping systemsnull A list onull organinullationsrepresented
12、on this conullnullittee can nulle onulltained on renullnullest to itssecretarynullSupersessionBS 7291-2:2010 snullpersedes BS 7291-2:200nullnull nullhich is nullithdranullnnullnullnformation about this documentnullB polynuller is nullidely nullnonulln as nullolynullnulltylenenull It is also renuller
13、red to asnullolynullnulltenenull nullolynullnullt-1-ene and nullolynullnulltene-1 nullnullB-1nullnullAttention is dranulln to BS 7291-nullnull nullhich specinulles corresponding re-nullnullirenullents nullor cross-linnulled polyethylene nullnullnull-nullnull pipes and associatednullttingsnullAttenti
14、on is also dranulln to BS null9nullnull-nullnull nullhich specinulles renullnullirenullentsand ginulles gnullidance on the correct application and installation onullthernulloplastics pipes and nullttings nullor the connulleyance onull donullestic hotand cold nullaternullnullresentational connullenti
15、onsThe pronullisions onull this standard are presented in ronullan nullinullenull nullprightnulltypenull Renullnullirenullents are enullpressed in sentences in nullhich the principalanullnulliliary nullernull is nullshallnullnullnullhere optional reconullnullendations are inclnulldednull they are en
16、ullpressed insentences in nullhich the principal anullnulliliary nullernull is nullshonullldnullnullnullommentarynull enullplanation and general informatinulle material is presentedin smaller italic typenull and does not constitnullte a normatinulle elementnullnullroduct certificationnullinspectionn
17、ulltestingnull nullsers onull this British Standardare adnullised to consider the desiranullility onull third party certinullcationnullinspectionnulltesting onull prodnullct connullornullity nullith this British Standardnull Appropriate connullornullity attestation arrangenullentsare descrinulled in
18、 BS nullN ISnullnullInullnull 1702nullnull nullsers seenulling assistance inidentinullying appropriate connullornullity assessnullent nullodies or schenulles nullayasnull BSI to nullornullard their ennullnulliries to the relenullant associationnullnullssessed capabilitynull nullsers onull this Briti
19、sh Standard are adnullised to con-sider the desiranullility onull nullnullality systenull assessnullent and registrationagainst the appropriate standard in the BS nullN ISnull 9000 series nully anaccredited third-party certinullcation nullodynullnullontractual and legal considerationsThis pnullnulll
20、ication does not pnullrport to inclnullde all the necessary pronullisionsonull a contractnull nullsers are responsinullle nullor its correct applicationnullnullompliance with a British Standard cannot confer immunity fromlegal obligationsnullBS 7291-2:2010inull null null BSI 2010BRITISH STANDARDIn p
21、articnulllarnull attention is dranulln to the nullollonulling statnulltory regnulllations:The Health and Sanullety at nullornullnull etc Act 197null null1nullThe nullater Snullpply nullnullater nullittingsnull Regnulllations 1999 null2nullAnnenull Anull Annenull B and Annenull null are nornullatinul
22、lenull Annenull D is innullornullatinullenullnull BSI 2010 null 1BS 7291-2:2010BRITISH STANDARD1 ScopeThis part onull BS 7291 specinulles general renullnullirenullents and nullethods onulltest nullor polynullnulltylene nullnullBnull pipe and nulltting systenulls intended nullor nullse nullithin null
23、nullildings nullor the connulleyance onull cold nullaternull inclnullding drinnulling nullaternull and heated nullater nullor nullse in donullestic hot and cold nullater distrinullnulltion and heating installationsnull These renullnullirenullents snullpplenullent the general renullnullirenullents in
24、 BS 7291-1null nullhich are also applicanulllenullnullnullTnull 1 nullefore reading this partnull it is essential to read nullnull null291null1nullnullnullTnull 2 nullethods of test are ginullen in nullnnenull nullnull nullnnenull null and nullnnenull nullnullnullnnenull null ginulles gnullidance on
25、 factory control procednullresnullThis standard specinulles general renullnullirenullents nullor nullaterials to nulle nullsed nullornull or in the nullornullnull onull nullB nullonolayernull nullnullltilayer or nullarrier pipesnull and associated nullttings and conullponentsnull nullarticnulllar re
26、nullnullirenullents are also specinulled nullor nullB pipe alone or nullointed nullith pnullsh-nulltnull nullnullsion or conullpression nullttings connullornulling to BS 7291 or other British Standards intended nullor nullse nullith pipes connullornulling to this partnullThis part onull BS 7291 pron
27、ullides nullor pipes dinullensioned to snullit tnullo estanulllished nulletric series: BS ISnull null0nullnull nullor thernulloplastics pipes generally and BS nullN 10null7null nullor conullpatinullility nullith copper pipenullornullsystenulls nullidely nullsed nullor these applicationsnullThis Brit
28、ish Standard is applicanullle only to nulllass nullSnull pipes and nullttingsnullIt does not specinully dinullensional renullnullirenullents nullor nullttings nullecanullse the pernullornullance renullnullirenullents specinulled nullor nullttingsnull nullhen tested indinullidnullally or in assenulln
29、ulllies nullith pipenull are intended to ensnullre that the dinullensions onull the nullttings are satisnullactory nullor nullointing pnullrposes and pressnullre containnullentnullnullnullTnull 3 Pipes and nullttings of nonnullbarrier Pnull are to some enulltent permeable to onullygennull hencenull
30、if they are nullsed for the primary circnullitnullsnull of a heating systemnull it might be benenullcial to add a corrosion inhibitor to the nullnullids circnulllating thereinnull nulln snullch a case the mannullfactnullrernullsnull of the pipe andnullor nulltting shonullldnull nullpon renullnullest
31、null pronullide adnullice in accordance with nullnull 5955null8nullThis adnullice shonullld inclnullde selection of a compatible corrosion inhibitor andnullor methods for rednullcing the permeabilitynull2 nullormatinulle referencesThe nullollonulling renullerenced docnullnullents are indispensanulll
32、e nullor the application onull this docnullnullentnull nullor dated renullerencesnull only the edition cited appliesnull nullor nullndated renullerencesnull the latest edition onull the renullerenced docnullnullent nullinclnullding any anullendnullentsnull appliesnullBS null21null-2null nullpecinull
33、cation for testing machines for rnullbbers and plastics nullPart 2null nullonstant rate of force application machinesBS 7291-1:2010null Thermoplastics pipes and associated nullttings for hot and cold water for domestic pnullrposes and heating installations in bnullildings null Part 1null nulleneral
34、renullnullirementsBS nullN nullnull1-1:199nullnull nulllastomeric seals null nullaterial renullnullirements for pipe nulloint seals nullsed in water and drainage applications null Part 1nullnullnulllcaninulled rnullbberBS nullN 10null7null nullopper and copper alloys null nulleamlessnull ronullnd co
35、pper tnullbes for water and gas in sanitary and heating applicationsBS nullN 12nullnull-2null nullopper and copper alloys null Plnullmbing nullttings null Part 2nullnullittings with compression ends for nullse with copper tnullbesBS 7291-2:20102 null null BSI 2010BRITISH STANDARDBS nullN 12nullnull-
36、nullnull nullopper and copper alloys null Plnullmbing nullttings null Part 3nullnullittings with compression ends for nullse with plastics pipesBS nullN 1229nullnull Plastic piping systems null nullystems for hot and cold water nullTest method for leaktightness nullnder nullacnullnullm BS nullN ISnu
37、ll 10nullnull-1null Plastics null nullymbols null Part 1null nullasic polymers and their special characteristicsBS nullN ISnull 11nullnullnull nullethods of testing plastics null nulletermination of melt nullow rate nullnullnullnullnull and the melt nullolnullmenullnullow rate nullnullnullnullnull o
38、f thermoplasticsBS nullN ISnull 11null7-1null Thermoplastics pipesnull nullttings and assemblies for the connulleyance of nullnullids null nulletermination of the resistance to internal pressnullre null Part 1null nulleneral methodsBS nullN ISnull 11null7-2null Thermoplastics pipesnull nullttings an
39、d assemblies for the connulleyance of nullnullids null nulletermination of the resistance to internal pressnullre null Part 2null Preparation of pipe test piecesBS nullN ISnull null12nullnull Plastics piping systems null Plastics components nullnulletermination of dimensionsBS nullN ISnull null2null
40、9-1null Thermoplastics pipes null nulletermination of tensile properties null Part 1null nulleneral test methodBS ISnull null0nullnullnull Thermoplastics pipes null nullninullersal wall thickness tableBS ISnull 1nullnullnullnull:2002null nullethod for the assessment of the degree of pigment or carbo
41、n black dispersion in polyolenulln pipesnull nullttings and componullnds ISnull null2null9-nullnull Thermoplastics pipe null nulletermination of tensile properties nullPart 3null Polyolenulln pipesnull nullaterialsnullnull1 nullB base materialnullolynullnulltylene nullsed in the nullannullnullactnul
42、lre onull pipes or onull associated nullttings shall conullprise heat-stanullilinulled nullB prepared nully the polynullerinullation onullnot less than nullnullnull nullnulltene-1 and not less than 9nullnull onull total olenullns nully nullassnull it shall othernullise contain only pignullent and th
43、ose additinulles that are needed nullor its nullannullnullactnullre and snullnullsenullnullent connullersion into pipes andnullor nullttings connullornulling to this standardnullnullhen the nullase nullaterial is tested in accordance nullith Annenull Anull the increase in nullelt nullonull rate anul
44、lter thernullal ageing shall nulle no greater than 200nullnullnullnull2 nullewornulled materialThe nullannullnullactnullrernulls onulln reprocessanullle nullaterial onulltained dnullring the prodnullct and nullornulls testing onull prodnullcts connullornulling to this standard can nulle nullsed in t
45、he nullannullnullactnullre onull pipes or associated nullttingsnull in addition to nullirgin nullaterialnull Reprocessanullle nullaterial onulltained nullronullenullternal sonullrces and recyclanullle nullaterial shall not nulle nullsednullnull BSI 2010 null nullBS 7291-2:2010BRITISH STANDARDnullnul
46、lnull nullther materialsInull nullaterials other than those connullornulling to nullnull1 or nullnull2 are nullsed nullor nullttings or conullponent parts onull nullttingsnull enullgnull conullpression ringsnull the conullplete nulltting shall connullornull to nullnull1null nullnull2 and nullnullnul
47、l inclnullsinullenull as applicanulllenullnullnullnull nullaterial in the form of pipe or fittingsnullnullnullnull1 nullpacitynullB pipe and associated nullttings shall connullornull to BS 7291-1:2010null nullnullnullnullnullnullnullnull2 nulligmentationnullor thernulloplastics conullponentsnull nul
48、lhen tested in accordance nullith BS ISnull 1nullnullnullnull:2002null any pignullent dispersion shall nulle at least as nullninullornullas that shonulln in photonullicrograph B onull BS ISnull 1nullnullnullnullnull Annenull Bnull inullenullonly dispersion ratings conullparanullle to photonullicrogr
49、aphs A1null A2null Anulland B onull BS ISnull 1nullnullnullnull:2002null Annenull Bnull are acceptanulllenullnullnullTnull nullo range of colonullrnullsnull is specinulled for pipes or nullttings conullered by nullnull null291null2null bnullt attention is drawn to 3.4.1null the renullnullirement of which may be satisnulled thronullgh incorporation of pigmentnullsnullnullnullnullnullnullnull nullffect of materials on the nulluality of drinnulling waterAll non-nulletallic parts onull the systenull that nullill nulle contact nullith drinnulling nullater shall connullornull to BS 7291-1:2010null
