SIST EN 12541:2003
(Main)Sanitary tapware - Pressure flushing valves and automatic closing urinal valves PN 10
Sanitary tapware - Pressure flushing valves and automatic closing urinal valves PN 10
This Eruopean Standard applies to flushing valves for WCs and valves for urinalswith automatic hydraulic closure, intended for: -WC pans prEN 997; -urinals; -siphon action urinals. It does not apply to no-contact detection valves. It is intended to specify: -the marking, identification, physical-chemical, dimensio- nal leaktightness, pressure behaviour, hydraulic, mechanical endurance and acoustic characteristics to determine requirement for the atmospheric interrup- ters (air gaps) which shall form an integral part of WC and urinal flushing valves with automatic closure.
Sanitärarmaturen - WC- und Urinaldruckspüler mit selbsttätigem Abschluss PN 10
Die vorliegende Europäische Norm gilt für WC-Druckspüler und Urinalspüler mit selbsttätigem Abschluss für: -WC-Becken nach prEN 997; - Urinale; -Urinale mit Geruchsverschluss. Sie gilt nicht für berührungslos ausgelöste Armaturen.
Robinetterie sanitaire - Robinets de chasse d'eau et d'urinoirs a fermeture hydraulique automatique PN 10
La présente Norme européenne s'applique aux robinets de chasses pour WC et aux robinets d'urinoirs, a fermeture hydraulique automatique, destinés aux :
cuvettes WC, EN 997 ;
urinoirs a simple rinçage, prEN 13407 ;
urinoirs a action siphonique, prEN 13407.
Elle ne s'applique pas aux robinets a détection sans contact.
Elle a pour objet de fixer :
le marquage et l'identification, les caractéristiques physico-chimiques, dimensionnelles, d'étanchéité, de tenue en pression, hydrauliques, acoustiques, d'endurance mécanique des robinets de chasse d'eau et robinets d'urinoirs a fermeture automatique ;
les méthodes d'essais a employer pour vérifier ces caractéristiques ;
les exigences du rupteur atmosphérique qui doit faire partie intégrante du robinet de chasse d'eau.
Elle s'applique dans les conditions de pression et température suivantes :
Tableau 1 - Conditions d'utilisation des robinetteries
Plage de pression dynamique recommandée pour bon fonctionnement Urinoirs
WC DN15
WC DN20 0,1 MPa * P * 0,4 MPa
(1 bar * P * 4 bar)
WC DN 25 0,08 MPa * P * 0,25 MPa
(0,8 bar * P * 2,5 bar)
WC DN 32 0,08 MPa * P * 0,2 MPa
(0,8bar * P * 2 bar)
Pression statique maximale 1 MPa ( 10 bar)
Température de l'eau * 25 °C
Sanitarne armature – Tlačni izplakovalniki WC in pisoarjev - Samozaporni PN10
General Information
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Sanitärarmaturen - WC- und Urinaldruckspüler mit selbsttätigem Abschluss PN 10Robinetterie sanitaire - Robinets de chasse d'eau et d'urinoirs a fermeture hydraulique automatique PN 10Sanitary tapware - Pressure flushing valves and automatic closing urinal valves PN 1091.140.70Sanitarne napraveSanitary installationsICS:Ta slovenski standard je istoveten z:EN 12541:2002SIST EN 12541:2003en01-oktober-2003SIST EN 12541:2003SLOVENSKI
STANDARD
SIST EN 12541:2003
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 12541December 2002ICS 91.140.70English versionSanitary tapware - Pressure flushing valves and automaticclosing urinal valves PN 10Robinetterie sanitaire - Robinets de chasse d'eau etd'urinoirs à fermeture hydraulique automatique PN 10Sanitärarmaturen - WC- und Urinaldruckspüler mitselbsttätigem Abschluss PN 10This European Standard was approved by CEN on 23 October 2002.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2002 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12541:2002 ESIST EN 12541:2003
EN 12541:2002 (E)2ContentspageForeword.41Scope.52Normative references.53Terms and definitions.64Classification and Designation.74.1Classification of flushing valves.74.2Classification of urinal valves.74.3Designation.85Marking.86Materials.86.1Chemical and hygienic requirements.86.2Condition of exposed surfaces and quality of coating.87Dimensional characteristics.87.1WC flushing valve.97.2Urinal valves.108Leaktightness characteristics.128.1General.128.2Leaktightness tests.138.3Leaktightness tests - Summary table.149Pressure resistance characteristics.149.1General.149.2Mechanical behaviour tests.149.3Mechanical behaviour tests - Summary table.1610Hydraulic and flow characteristics of WC flushing valves.1610.1General.1610.2Test method for WC flushing valves.1610.3Outline of flow rate-time-volume-impact force test and requirements.2210.4Summary of requirements.2610.5Measurement of water hammer.2611Principle and verification of atmospheric pipe interrupters of WC flushing valves.2711.1General.2711.2Atmospheric pipe interrupter composition.2711.3Installation conditions.2811.4Verification of absence of water splashes.2911.5Verification of operation at vacuum.2912Hydraulic or flow characteristics of urinal valves.3012.1General.3012.2Test method for urinal valves.3012.3Requirements.3113Operating force.3114Mechanical endurance characteristics.3114.1General.3114.2WC flushing valves.3114.3Urinal valves.32SIST EN 12541:2003
EN 12541:2002 (E)315Acoustic characteristics.3215.1General.3215.2Procedure.3315.3Requirements.33SIST EN 12541:2003
EN 12541:2002 (E)4ForewordThis document (EN 12541:2002) has been prepared by Technical Committee CEN/TC 164, "Water supply", thesecretariat of which is held by AFNOR.This European Standard shall be given the status of a national standard, either by publication of an identical text orby endorsement, at the latest by June 2003, and conflicting national standards shall be withdrawn at the latest byJune 2003.As for possible unfavourable effects of the product to which this standard applies on the quality of water for humanconsumption :1) no information is provided by this standard on possible use restrictions of the product in any of themember states of the EU or the EFTA ;2) it should be noted that, while awaiting the adoption of verifiable European criteria, existing nationalregulation concerning the use and/or characteristics of this product remain in force.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain,Sweden, Switzerland and the United Kingdom.SIST EN 12541:2003
EN 12541:2002 (E)51 ScopeThis draft European standard applies to flushing valves for WCs and valves for urinals, with automatic hydraulicclosure, intended for :¾ WC pans EN 997 ;¾ single flush urinals prEN 13407 ;¾ siphon acting urinals prEN 13407.It does not apply to no-contact detection valves.It is intended to specify :¾ marking and identification, physico-chemical, dimensional, leaktightness, pressure behaviour, hydraulic,mechanical endurance and acoustic characteristics of flushing valves for WCs and urinals with automaticclosure ;¾ test methods used to verify these characteristics ;¾ and to determine requirements for the atmospheric interrupter which shall be an integral part of the WCflushing valve.It applies in the following pressure and temperature conditions :Table 1 — Conditions of use for tapwareUrinalsWC DN 15WC DN 200,1 MPa £ P £ 0,4 MPa(1 bar £ P £ 4 bar)WC DN 250,08 MPa £ P £ 0,25 MPa(0,8 bar £ P £ 2,5 bar)Dynamic Pressure rangerecommended for a goodworkingWC DN 320,08 MPa £ P £ 0,2 MPa(0,8 bar £ P £ 2 bar)Maximum static pressure1 MPa (10 bar)Water temperature£ 25 °C2 Normative referencesThis European Standard incorporates by dated or undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text and the publications are listed hereafter. Fordated references, subsequent amendments to or revisions of any of these publications apply to this EuropeanStandard only when incorporated in it by amendment or revision. For undated references the latest edition of thepublication referred to applies (including amendments).EN 248, Sanitary tapware — General specification for electrodeposited nickel chromium coatings of Ni-Cr.EN 997, WC pans with integral trap.prEN 13407:1998, Wall-hung urinals - Functional requirements and test methods.SIST EN 12541:2003
EN 12541:2002 (E)6EN ISO 3822-1, Acoustics — Laboratory tests on noise emission from appliances and equipment used in watersupply installations — Part 1 : Method of measurement (ISO 3822-1:1999)EN ISO 3822-4, Acoustics — Laboratory tests on noise emission from appliances and equipment used in watersupply installations — Part 4 : Mounting and operating conditions for special appliances (ISO 3822-4:1997) ISO 49,
Malleable cast iron fittings threaded to ISO 7-1ISO 65,
Carbon steel tubes suitable for screwing in accordance with ISO 7-1ISO 228-1:2000,
Pipe threads where pressure-tight joints are not made on the threads -- Part 1: Dimensions,tolerances and designation3 Terms and definitionsFor the purposes of this European Standard, the following terms and definitions apply.3.1automatic closing valvestapware whose opening is operated by a mechanical action on the control device, and whose closure happensautomatically after a period of adjustable or non-adjustable duration3.2WC flushing valvesautomatic closing valves intended to ensure the flushing out of WC pans in accordance with EN 997, andcomprising an atmospheric interrupter3.2.1stop valves for flushing valvethis is used to stop water flow upstream of the flushing valve. It may be integrated into the flushing valve, orseparate from it3.2.2flow control equipmentmanual or automatic equipment controlling the flush flow and which is an integral part of the flushing valve or of thestop valve. If it is part of the stop valve, this latter shall not be linked to the flushing valve by a ISO 228 thread3.2.3volume control equipmentthis is used to control the volume of water delivered by a flushing valve3.3 Urinal valves3.3.1single flush urinal valvesthese are intended for flushing single flush urinals (see prEN 13407:1998, 3.6 and 3.7)3.2.2siphon action urinal valvesthese are intended for flushing siphon acting urinals (see prEN 13407:1998, 3.4)SIST EN 12541:2003
EN 12541:2002 (E)73.3.3stop valves for urinal valvesthis is used to stop water supply. It may be integrated in the urinal valve and may be used to control the flow3.4Key to AbbreviationsTable 2 — AbbreviationsDESIGNATIONABBREV.UNITDEFINITIONNominal sizeDNmmDefines the hydraulic and dimensional values of thevalveFlow rateQl/sVolume of water supplied in the unit of timeOperating timeTsTime elapsing between the start of activation and thereturn to 0 of the flow rateVolume of waterVlVolume of water supplied during the operating timeStatic pressurePsMPa (bar)Pressure upstream of valve in absence of flowDynamic pressurePdMPa (bar)Pressure upstream of valve during flowWater hammerDPMPa (bar)Overpressure occurring upstream of valve at time ofclosureImpact forceFNForce produced by jet at outlet of flushing pipe.4 Classification and Designation4.1 Classification of flushing valvesFlushing valves are classified according to their volume class.4.1.1 6 litre and 6 to 9 litre valvesIf a valve is intended to deliver 6 litres of water, or is adjustable from 6 to 9 litres of water, the valve belongs to"Class 6".4.1.2 9 litre valveIf the valve is intended to deliver 9 litres of water, the valve belongs to "Class 9".4.2 Classification of urinal valvesUrinal valves are classified according to their “volume class”.4.2.1 1.5 litre valvesIf a valve is intended to deliver 1.5 litre of water, the valve belongs to "Class 1.5".4.2.2 4 litre valvesIf a valve is intended to deliver 4 litres of water, the valve belongs to "Class 4".4.2.3 6 litre valvesIf a valve is intended to deliver 6 litres of water, the valve belongs to "Class 6".SIST EN 12541:2003
EN 12541:2002 (E)84.3 DesignationAn automatic closing flushing or urinal valve is designated by :¾ the type of appliance for which it is intended (WC, siphon action urinal, single flush urinals…) ;¾ volume class (e.g. class 6 or class 9) ;¾ type of control (push-button, remote control.) ;¾ mounting method (top-entry, side-entry, flush.) ;¾ its nominal DN size ;¾ its connecting dimension ;¾ the presence of an incorporated stop valve ;¾ the acoustic group (if classified).EXAMPLEflushing valve / for WC / Class 6 / push-button / top-entry / DN 20 / G3/4 B with incorporated stop valve /Group 15 MarkingTapware complying with this standard shall be marked indelibly and permanently on the appliance with the mark orname of the manufacturer and the acoustic group.6 Materials6.1 Chemical and hygienic requirementsAll materials in contact with water intended for human consumption shall present no danger to health up to atemperature of 25°C.They shall cause no deterioration in water intended for human consumption either with regard to nutritional quality,appearance, smell or taste.Within the limits recommended in Clause 1 for correct operation, the materials shall not undergo any deterioration,which might compromise the operation of the valve.Pressurised parts shall withstand the limits of use set in Table 1.Materials with inadequate corrosion resistance shall be given adequate protection against it.6.2 Condition of exposed surfaces and quality of coating Exposed chromium plated surfaces shall comply with the specifications of EN 248.7 Dimensional characteristics General comments on drawings : the design and construction of parts without marked dimensions do not in anyway prejudice the various solutions used by the manufacturer to produce the corresponding components.SIST EN 12541:2003
EN 12541:2002 (E)97.1 WC flushing valveTable 3 — Threads and outlet pipe (see Figure 1 and Figure 2)DimensionsDesignationDN15DN20DN25DN32AMale thread (ISO 228-1:2000)G1/2BG3/4BG1BG1 1/4BDFemale thread (ISO 228-1:2000)G1/2G1/2G3/4G1G (+0/-0,5) mmDiameter of pipe connection sleeve202626 or 3030H (+0,2/+0,5) mmDiameter of valve outlet for connection topipe by compression joint222828 or 3232Table 4 — Permitted thread lengths (see Figure 1 and Figure 2)DimensionCommentG1/2BG1/2G3/4BG3/4G1BG1G1 1/4BC min Useful thread length (mm)8101011L minMale thread (mm)11131519F minFemale thread (mm)1012127.1.1 Side-entry WC flushing valvesFigure 1 — Side entry WC flushing valves (see Table 3 and Table 4)SIST EN 12541:2003
EN 12541:2002 (E)107.1.2 Top-entry WC flushing valvesFigure 2 — Top entry WC flushing valves (see Table 3 and Table 4)7.2 Urinal valvesTable 5 — Threads (see Figure 3 and Figure 4)DIMENSIONSDESIGNATIONDN15DN20AaMale thread (ISO228-1:2000)G1/2BG3/4BDaFemale thread (ISO 228-1:2000)G1/2G1/2C minUseful thread length810L minMale thread1113F minFemale thread1012aIf the urinal connecting pipe is supplied with the valve, dimensions A and D are not mandatory at theoutletSIST EN 12541:2003
EN 12541:2002 (E)117.2.1 Top entry urinal valveFigure 3 — Top-entry urinal valve (see Table 5)SIST EN 12541:2003
EN 12541:2002 (E)127.2.2 Side-entry urinal valvesFigure 4 — Side -entry urinal valve (see Table 5)NOTEWhere the outlet and inlet are different, the nominal size is that of the inlet and the outlet diameter will be shown(e.g. : top-entry urinal valve G1/2 male with female outlet G3/4H).8 Leaktightness characteristics8.1 GeneralThe tests described below are type tests (laboratory tests) and not quality control tests carried out duringmanufacture. They are carried out in water whose temperature is inferior or equal to 25°C.This clause specifies test methods for verifying the leaktightness of the tapware unit and gives the correspondingspecifications.If flow rate adjustment is incorporated in the stop valve, it is the mounted unit, which shall be tested.SIST EN 12541:2003
EN 12541:2002 (E)138.2 Leaktightness tests8.2.1 Test methods8.2.1.1 PrincipleThe test principle consists of verifying under cold water pressure :a) the leaktightness of the stop valve ;b) the leaktightness of the tapware (body, head-body unit, etc.).8.2.1.2 ApparatusThis comprises a hydraulic test circuit capable of supplying the required static and dynamic pressures and whichcan maintain them throughout the duration of the test.8.2.2 Leaktightness of the stop valve and leaktightness of tapware upstream of the seat8.2.2.1 Procedure¾ Connect tapware to test circuit ;¾ apply a static water pressure of (1,6 ± 0,05) MPa ((16 ± 0,5) bar) for (60 ± 5) s ;¾ apply a static water pressure of (0,1 ± 0,01) MPa ((1 ± 0,1) bar) for (60 ± 5) s.8.2.2.2 Requirementsa) Verify the leaktightness of stop valve. There shall be no leakage at the stop valve for the duration of the test ;b) verify the leaktightness upstream of the seat. There shall be no leakage or seepage through the walls of thevalve for the duration of the test.8.2.3 Leaktightness of tapware downstream of the seatThis test only applies to urinal valves.8.2.3.1 Procedure¾ Connect tapware to test circuit ;¾ open the stop valve with the outlet of the urinal valve closed and generally facing downwards ;¾ apply a static water pressure of (0,4 ± 0,02) MPa ((4 ± 0,2 bar) for (60 ± 5) s ;¾ apply a static water pressure of (0,02 ± 0,005) MPa ((0,2 ± 0,05) bar) for (60 ± 5) s.8.2.3.2 RequirementsThere shall be no leakage or seepage through the walls for the duration of the test.SIST EN 12541:2003
EN 12541:2002 (E)148.3 Leaktightness tests - Summary tableTable 6 — Summary of leaktightness testsLeaktightness of:Position ofstop valveOutletopeningPressureDurationRequirementsClosedOpen(0,1 ± 0,01) MPa(1 ± 0,1) bar60 ±
5 sStop valveClosedOpen(1,6 ± 0,05) MPa(16 ± 0,5) bar60 ±
5 sUpstream ofseatClosedOpen(1,6 ± 0,05) MPa(16 ± 0,05) bar60 ± 5 sDownstreamof seat(0,4 ± 0,02) MPa(4 ± 0,2) bar60 ± 5 sTapware UnitbcOpenaClosed(0,020 ± 0,005) MPa(0,2 ± 0,05) bar60 ± 5 sNo leakageaIn the case of tapware with a system to prevent locking in permanent flow position, carry out the test with the stop valveimmobilised mechanically.bIn the case of hydraulic opening valves, the test at 0,02 MPa (0,2 bar) is not mandatory.cOnly for urinal valves9 Pressure resistance characteristics9.1 GeneralThe tests described below are type tests (laboratory tests) and not quality control tests carried out duringmanufacture. They are carried out with water at a temperature lower than or equal to 25°C.This clause specifies a test method for verifying the mechanical behaviour of the body of the tapware and thecorresponding requirement.9.2 Mechanical behaviour tests9.2.1 Test methods9.2.1.1 PrincipleThe principle of the test consists in detecting any deformation, which may occur in the tapware owing to the actionof cold water at a high pressure.The test is carried out upstream and downstream of the tapware stop valve.In the case of WC valves, the pressure is only applied upstream of the stop valve.NOTEThose valves, which were submitted to tests as 9.2.2. shall not be used for other tests.SIST EN 12541:2003
EN 12541:2002 (E)159.2.1.2 EquipmentThe equipment used will be the same as that described in 8.2.1.2.9.2.2 Mechanical behaviour upstream of the seat with the stop valve in the closed position9.2.2.1 ProcedureApply a static water pressure of (2,5 ± 0,05) MPa ((25 ± 0,5) bar) for 60 ± 5 s.9.2.2.2 RequirementsThere shall be no permanent deformation in the part of the tapware upstream of the seat.Seepage around the fittings is tolerated.9.2.3 Mechanical behaviour downstream of the seat with the stop valve in the open positionThis test only applies to urinal valves.9.2.3.1 ProcedureApply a dynamic water pressure of (0,4 ± 0,02) MPa ((4 ± 0,2) bar) for a period of 60 s with the pressure measuredat the tapware inlet connection.The test is carried out on the tapware as fitted.9.2.3.2 RequirementsThere shall be no permanent deformation of the part of the tapware downstream of the urinal valve seat.SIST EN 12541:2003
EN 12541:2002 (E)169.3 Mechanical behaviour tests - Summary tableTable 7 — Summary of mechanical behaviour tests under pressureCold water testBehaviour under pressure ofPosition ofstop valveOutletopeningTest conditionsRequirementsPressureDurationUpstream ofseatClosedOpen(Static pressure)(2,5 ± 0,05) MPa(25 ± 0,5) bar60 ± 5 sNo permanentdeformationupstreamTapware unitDownstream ofseataOpenOpen(Dynamic pressure)(0,4 ± 0,02) MPa(4 ± 0,2) bar)60 ± 5 sNo permanentdeformationdownstreamaOnly for urinals10 Hydraulic and flow characteristics of WC flushing valves10.1 GeneralThe tests described below are type tests (laboratory tests) and not quality control tests carried out duringmanufacture.This clause specifies a test method for measuring, for a given pressure :¾ the flow rate ;¾ the period of flow ;¾ the volume of water supplied ;¾ the impact force ;¾ the value DP of the water hammer on closing, and gives the corresponding specifications.10.2 Test method for WC flushing valves10.2.1 PrincipleIn order to verify the characteristics defined in 10.1, the curve of flow rate is interpreted as a function of time basedon the readings taken during the tests in 10.3 (Figure 8).10.2.2 Test apparatusThe test apparatus is made up of 3 parts :10.2.2.1 A hydraulic circuitSee Figure 6 - Circuit N° 1.SIST EN 12541:2003
EN 12541:2002 (E)1710.2.2.1.1 Verification of the test hydraulic circuitThe hydraulic test circuit shall be capable of supplying the valve to be tested in all the test configurations.Verification of the flow rate capacityBy replacing flushing valve “class 9” with a DN25 ball valve with full way through, adjust the DN25 valve so that theinstallation has a flow rate of at least 1,5 l/s at (0,4 +0/-0,01) MPa ((4 +0/-0,1) bar).After 30 seconds, in dynamic mode, the pressure shall not drop below 0,38 MPa (3.8 bar), nor exceed 0,4 MPa,(4 bar).Verification of pressure riseThe valve is then closed slowly > 1sec and the static pressure established shall not be greater than 0,6 MPa (6bar).Verification of rate of increase of flow rateThis is a question of verifying that the installation is capable of supplying a certain flow rate within a certain time, inorder to carry out the test described in 10.3.2 :The test shall be carried out with a record of the flow rate, the pressure and where necessary the position of valveN° 2.Replace the flushing valve with a DN25 valve N° 1 so the flow rate can be adjusted, and a DN25 spherical valveN° 2 (see Figure 5).Open valve N° 2 wide and adjust valve N° 1 so that the flow rate in the latter is a steady 1,5 l/s at 1.2 bar.Close valve N° 2 slowly >1sec.Allow the static pressure to stabilise.Open valve N° 2 in less than 50 ms.Verify that the flow rate is established at 1,5 l/s in less than 1 s and does not fall below this value for 10 s.SIST EN 12541:2003
EN 12541:2002 (E)18KeyQ - flowmeterP - manometerN°1 and N°2 - spherical turnvalve with integral passageFigure 5 — Test assembly for flow rate increase10.2.2.1.2 Measuring equipmentThe measuring equipment and the pressure/flow rate/force/time recorder shall be such that the specification givencan be verified. Its pass-band shall be not less than 400 Hz. The acquisition frequency shall not be less than400 Hz to measure the water hammer.10.2.2.2 A water hammer test loopSee Figure 6 - circuit N° II.This is made of galvanised DN25 pipe, in accordance with ISO 65.The loop shall comprise three 180° turns, two 90° turns and 6 straight lengths. The plane of the loop shall bevertical, and it shall be fitted with air-bleed systems at the top.The total length of the pipework between B and C shall be (20 ± 0,20) m.The straight lengths of pipework shall be at least 1 m.10.2.2.3 A vacuum test circuitSee Figure 6 - Circuit N° III.Vacuum tank N° 15 shall have a capacity of at least 0.75 m3.Vacuum pump N° 17 shall have sufficient capacity to take the tank to an absolute pressure of 0,02 MPa (0,2 bar),i.e. a relative pressure of – 0,08 MPa (-0,8 bar).Pressure gauge N° 16 shall have a measuring range of 0,01 MPa (0,1 bar) to 0,1 MPa (1 bar) at absolute pressure.SIST EN 12541:2003
EN 12541:2002 (E)19KeyCIRCUIT N°1 : HYDRAULIC TESTCIRCUIT N°11 : WATER HAMMER TESTCIRCUIT N°111 : VACUUM TEST1PRESSURE REGULATOR (Non imposed type2FLOWMETER (Non imposed type)3BALL VALVE DN404DN25 BALL VALVE FOR CIRCUIT ISOLATION (11)5STRAIGHT LENGTH OF DN25 GALVANISED. TUBING AS PER ISO 256.ISO 49 -G4 GALVANISED BEND FEM-FEM DN257ISO 49-G4 GALVANISED BEND MALE-FEM-DN258STANDARDISED PRESSURE + PRESSURE GAUGE9TEST VALVE (HYDRAULIC TEST)10FLUSH TUBE WITH BEND11IMPACT MEASUREMENT APPARATUS12AUTOMATIC ACTIVATING SYSTEM13ELECTRONIC RECORDING EQUIPMENT P/Q/F14STOP VALVE TOWARDS VACUUM
MEASUREMENT15VACUUM TANK16MANOMETER17VACUUM PUMP18VACUUM TEST VALVE19TRANSPARENT TUBE20TEST TANKFigure 6 — Test installation diagramSIST EN 12541:2003
EN 12541:2002 (E)2010.2.3 Measurement of impact force and requirementsThe requirements are summarised in Table 9.10.2.3.1 Calibration of impact force measurement equipmentA measurement unit as shown in Figure 7 is used.The force sensor shall have an accuracy of ±1%.The installation is calibrated using the test sleeve.This is fitted in place of the flushing valve, and the flow rate is adjusted to a steady (1 ± 0,01) l/s.The impact force shall be 12,7 N (± 0,5N).Dimensions in millimetresKey1 force sensor2 flushing pipe as per DN (see table 6)3 test sleeveFigure 7 — Impact force measurement unit10.2.3.2 Test method for flushing valveThe test sleeve is removed and the valve fitted with the flushing pipe which corresponds to its DN (see Table 8).If the valve is fitted with an automatic flow regulator, the flow w
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