SIST EN 13997:2004

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.QDPDNDOQHPBewässerungsverfahren - Verbindungs- und Steuerzubehör für den Einsatz in Bewässerungssystemen - Technische Eigenschaften und PrüfungTechniques d'irrigation - Accessoires de raccord et de commande pour usage dans les systemes d'irrigation - Caractéristiques techniques et essaisIrrigation techniques - Connection and control accessories for use in irrigation systems - Technical characteristics and testing65.060.35Namakalna in drenažna opremaIrrigation and drainage equipmentICS:Ta slovenski standard je istoveten z:EN 13997:2003SIST EN 13997:2004en01-junij-2004SIST EN 13997:2004SLOVENSKI
STANDARD



SIST EN 13997:2004



EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13997November 2003ICS 65.060.35English versionIrrigation techniques - Connection and control accessories foruse in irrigation systems - Technical characteristics and testingTechniques d'irrigation - Accessoires de raccord et decommande pour usage dans les systèmes d'irrigation -Caractéristiques techniques et essaisBewässerungsverfahren - Verbindungs- und Steuerzubehörfür den Einsatz in Bewässerungssystemen - TechnischeEigenschaften und PrüfungThis European Standard was approved by CEN on 19 September 2003.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,Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and UnitedKingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2003 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13997:2003 ESIST EN 13997:2004



EN 13997:2003 (E)2ContentspageForeword.31Scope.42Normative references.43Terms and definitions.44Technical characteristics and requirements.54.1Material and method of production of the parts.54.2Corrosion resistance and protection against corrosion.54.2.1General.54.2.2Steel parts.64.2.3Parts made of brass.64.2.4Parts made of Aluminium alloy.64.2.5Parts made of Polypropylene (PP) or
Polyvinylchloride (PVC).64.3Dimensions.64.3.1General.64.3.2Length.64.3.3Width.74.3.4Height.74.3.5Diameter.74.4Smoothness of surface.74.5Coupling.74.6Replacement of parts with spherical couplings in a plant.84.7Allowable operating pressure (nominal pressure).84.8Pressure loss.85Marking.86Testing.96.1Construction and operating tests.96.1.1Sampling and test forms.96.1.2Test procedure.96.1.3Test equipment.106.1.4Test conditions.106.2Carrying out of test.106.2.1General.106.2.2Dimensions.116.2.3Wall thickness (without corrosion protection).116.2.4Total length of part.116.2.5Nominal length of part.116.2.6Bending angle.116.2.7Replacement.116.2.8Pressure loss.116.2.9Behaviour under nominal pressure.116.2.10Installation of line to be tested.136.2.11Supporting of empty part.136.2.12Bending test.146.2.13Bulging test.146.2.14Effects of bulging test.14Annex A (informative)
Application for test of connection and control accessories according to EN13997 – Form 1.15Annex B (informative)
Results of test of connection and control accessories carried out according toEN 13997 – Form 2.17Bibliography.20SIST EN 13997:2004



EN 13997:2003 (E)3ForewordThis document (EN 13997:2003) has been prepared by Technical Committee CEN/TC 334 “Irrigation techniques”,the secretariat of which is held by AENOR.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 May 2004, and conflicting national standards shall be withdrawn at the latest byMay 2004.Annexes A and B are informative.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, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal,Slovakia, Spain, Sweden, Switzerland and the United Kingdom.SIST EN 13997:2004



EN 13997:2003 (E)41 ScopeThis standard describes the technical characteristics and requirements of hydraulic connection and controlaccessories to ensure a sufficient mechanical resistance for practical use, and specifies the relevant testingmethods. It applies to accessories made of steel, brass, aluminium, Polypropylene, Polyethylene or PVC for use inirrigation systems up to a diameter of 250 mm.2 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 10240, Internal and/or external protective coatings for steel tubes - Specification for hot dip galvanized coatingsapplied in automatic plants.ISO 209-1, Wrought aluminium and aluminium alloys — Chemical composition and forms of products – Part 1:Chemical composition.ISO 209-2, Wrought aluminium and aluminium alloys — Chemical composition and forms of products – Part 2:Forms of products.ISO 3522, Cast aluminium alloys — Chemical composition and mechanical properties.ISO 11678, Agricultural irrigation equipment - Aluminium irrigation tubes.3 Terms and definitionsFor the purposes of this European Standard, the following terms and definitions apply.3.1connection accessory for irrigationportable device with coupling parts (such as threads, flanges or quick couplings) which give a safe connection withother parts or with a pipe with couplings of the same kind3.2quick coupling accessoryconnection accessory which allows a connection in a few seconds mostly without a tool and which can be loosenedin the same easy way3.3moulded partmoulded, welded or formed parts for connection of parts of an irrigation plant laid down in straight or modifieddirection with same or different parameters such as bends, valves (i. e. inline gate valves), online hydrants, openingelbow, pump connection bow, T-pieces, reduced cross, diameter reduction parts, thread pieces, stabilizers, risers,end plugs (male and female). See Figure 1.SIST EN 13997:2004



EN 13997:2003 (E)5a) elbow b) T-piece
c) diameter reduction
d) riserFigure 1 — Examples for connection accessories (symbols)3.4control accessoryparts which influence the water pressure and the direction of flow or give data for influence in an irrigation plantsuch as flowmeters, pressure gauges, filters, valves (i. e. inline gate valves), online hydrants, pressure reductionvalves, shot valves, control units, non return valves, air escape valves, emptying valves. See Figure 2.a) Control unit b) filter c) flow meter d) pressure gauge e) pressure reduction valve f) non return valve g) shot valveFigure 2 — Examples for control accessories (symbols)4 Technical characteristics and requirements4.1 Material and method of production of the partsThe methods of production depending on the materials are listed in Table 1.Table 1 — Materials and methods of productionMaterialMethod of productionSteelWelded or mouldedBrassWelded or mouldedAluminium alloyWelded or mouldedPolypropylene (PP)ExtrudedPolyethylene (PE)ExtrudedPolyvinylchloride (PVC)Extruded4.2 Corrosion resistance and protection against corrosion4.2.1 GeneralConnection and control accessories shall be corrosion resistant against the application.SIST EN 13997:2004



EN 13997:2003 (E)64.2.2 Steel partsParts made of steel plate have to be hot dip zinc galvanized according to EN 10240.Parts made of moulded steel have to be galvanized or covered with an anticorrosion colour.4.2.3 Parts made of brassParts made of brass are resistant against irrigation water without abrasive and or chemical components. The usewith solutions of fertilizer and or agents for plant protection shall be granted by the manufacturer.4.2.4 Parts made of Aluminium alloyParts made of Aluminium alloy shall meet the requirements for tubes given in ISO 209-1, ISO 209-2, ISO 3522 andISO 11678.4.2.5 Parts made of Polypropylene (PP) or Polyvinylchloride (PVC)No specific requirements (parts made of such material are resistant against the chemical influence of soil andwater).4.3 Dimensions4.3.1 GeneralIf fitted with quick couplings it is to distinguish between the nominal length (lN) and the overall length (lO) ofaccessories. The dimensions of elbows are to be determined along and at the end of the centre line.4.3.2 Length4.3.2.1 Nominal lengthThe nominal length of a part is declared by the manufacturer and is measured after connection of two identicalparts as the distance between two similar points on both parts. (The measurement should be carried out undernominal pressure at (20 ± 5)°C. Deviation of 0 % to 0,4 % is allowable. See Figure 3).4.3.2.2 Overall lengthThe overall length of a part fitted with fittings or quick couplings is the total length of a part including coupling parts.See Figure 3.SIST EN 13997:2004



EN 13997:2003 (E)7KeylNnominal lengthlOoverall lengthFigure 3 — Nominal and overall length of parts fitted with quick couplings4.3.3 WidthThe width is to be determined in the same way as described in 4.3.2.4.3.4 HeightThe height is to be determined in the same way as described in 4.3.2.4.3.5 DiameterThe diameter is to be determined without coupling parts. The diameter of coupling parts is to determinedseparately.It is to distinguish between inner diameter (dI), outside diameter (do) or nominal diameter (dN).4.4 Smoothness of surfaceThe inner side of the wall of connection and control accessories shall be smooth; welding residue and flashes areallowed to protrude not more than 2 mm. The protective coating on steel pipes shall have an adhesion strongenough to prevent peeling due to hits caused during transportation or general use. The adhesion of the coatingshould also avoid hairline cracks caused by the test pressure.4.5 CouplingThree kinds of couplings are usually used:¾ Spherical coupling with O – ring seal.
Closed mechanically;¾ Coupling with lip type seal.Closed mechanically;¾ Coupling with lip type seal.Closed by water pressure. For special application lip type couplings may be required to be loose at pressures below 50 kPa by agreement.SIST EN 13997:2004



EN 13997:2003 (E)8The maximum bending angle of adjacent elements in degrees shall be declared by the manufacturer in hisdocumentation. The coupling must be water-tight if filled with water under nominal pressure. If quick couplingpipelines are used as suction line the couplings must be water and air-tight. The couplings must withstand openingand closing for 2000 times.4.6 Replacement of parts with spherical couplings in a plantThe replacement of one part in the middle of a pipeline with 100 m length shall be possible without moving thewhole pipeline in longitudinal direction.4.7 Allowable operating pressure (nominal pressure)The nominal pressure of parts is declared by the manufacturer. The operating pressure in accessories shall notexceed the nominal pressure of those parts. The selection of accessories shall be made taking into accountpossible pressure shocks (water hammer).4.8 Pressure lossThe manufacturer shall declare the head loss at nominal pressure or at nominal flow rate. If the head loss is to bedetermined without a standardized test method existing the used test method must be described very carefully toenable further measurement under comparable conditions.5 MarkingConnection and control accessori
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