1、July 2017 English price group 14No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 65.060.35!%guT“2688249www.din.deDIN
2、 EN ISO 13693-1Irrigation equipment Safety devices for chemigation Part 1: Small plastics valves for chemigation (ISO 136931:2013);English version EN ISO 136931:2017,English translation of DIN EN ISO 13693-1:2017-07Bewsserungsausrstung Sicherheitsvorrichtungen fr Beimischungseinrichtungen Teil 1: Kl
3、eine Kunststoffventile fr Beimischungseinrichtungen (ISO 136931:2013);Englische Fassung EN ISO 136931:2017,Englische bersetzung von DIN EN ISO 13693-1:2017-07Matriel dirrigation Dispositifs de scurit pour lapplication de produits chimiques par irrigation Partie 1: Petites vannes en matire plastique
4、pour lapplication de produits chimiques par irrigation (ISO 136931:2013);Version anglaise EN ISO 136931:2017,Traduction anglaise de DIN EN ISO 13693-1:2017-07www.beuth.deDocument comprises 29 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered a
5、uthoritative.06.17 DIN EN ISO 13693-1:2017-07 2 A comma is used as the decimal marker. National foreword This standard (ISO 13693-1:2013) has been prepared by Technical Committee ISO/TC 23 “Tractors and machinery for agriculture and forestry”, Subcommittee SC 18 “Irrigation and drainage equipment an
6、d systems” and has been taken over as EN ISO 13693-1:2017 by Technical Committee CEN/TC 334 “Irrigation techniques” (Secretariat: UNE, Spain). The responsible German body involved in its preparation was DIN-Normenausschuss Wasserwesen (DIN Standards Committee Water Practice), Working Committee NA 11
7、9-02-14 AA Irrigation and drainage (CEN/TC 334, ISO/TC 23/SC 18) . In addition to the legal units of measurement, this standard also uses the units “F”, “in (inch)” and “psi”. It should be noted that the Gesetz ber Einheiten im Messwesen (German Law on units in metrology) prohibits the use of these
8、units for official and commercial purposes in Germany. The indication of these units solely serves to facilitate the communication with those countries where these units are used (import-export business). Conversion: Non-SI unit SI unit Conversion F C nullF =95 nullC+32 in (inch) mm 1 inch = 25,4 mm
9、 psi Pa 1 psi = 6 894,757 Pa “”EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 13693-1 March 2017 ICS 65.060.35 English Version Irrigation equipment - Safety devices for chemigation - Part 1: Small plastics valves for chemigation(ISO 13693-1:2013) Matriel dirrigation - Dispositifs de scurit
10、 pour lapplication de produits chimiques par irrigation - Partie 1: Petites vannes en matire plastique pour lapplication de produits chimiques par irrigation(ISO 13693-1:2013) (ISO 13693-1:2013) This European Standard was approved by CEN on 8 February 2017. CEN members are bound to comply with the C
11、EN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management C
12、entre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as
13、the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Neth
14、erlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CE
15、N All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 13693-1:2017 EBewsserungsausrstung Sicherheitsvorrichtungen fr Beimischungseinrichtungen Teil 1: KleineKunststoffventile fr BeimischungseinrichtungenContents PageEuropean foreword .
16、31 Scope . 52 Normative references 53 Terms and definitions . 54 Classification 65 Designation 66 Materials . 67 Design requirements 77.1 General . 77.2 Relief valve 87.3 Pressure taps 88 Characteristics and tests 98.1 General test conditions 98.2 Expression of the results . 108.3 Order of testing 1
17、08.4 Mechanical characteristics. 108.5 Tightness tests 138.6 Hydraulic characteristics 168.7 Long-term pressure endurance . 199 Marking .1910 Packaging 19Annex A (informative) Examples of presentation of test results21Bibliography .27DIN EN ISO 13693-1:2017-07 EN ISO 13693-1:2017 (E) 2Foreword .4Eur
18、opean foreword The text of ISO 13693-1:2013 has been prepared by Technical Committee ISO/TC 23 “Tractors and machinery for agriculture and forestry” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 13693-1:2017 by Technical Committee CEN/TC 334 “Irrigatio
19、n techniques” the secretariat of which is held by UNE. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by September 2017, and conflicting national standards shall be withdrawn at the latest by Septem
20、ber 2017. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN-CENELEC Internal Regulations, the national standards or
21、ganizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembour
22、g, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 13693-1:2013 has been approved by CEN as EN ISO 13693-1:2017 without any modification. DIN EN ISO 13693-1:2017-07 EN ISO
23、 13693-1:2017 (E) 3 ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a su
24、bject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (
25、IEC) on all matters of electrotechnical standardization.International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committ
26、ees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be h
27、eld responsible for identifying any or all such patent rights.ISO 13693-1 was prepared by Technical Committee ISO/TC 23, Tractors and machinery for agriculture and forestry, Subcommittee SC 18, Irrigation and drainage equipment and systems.ISO 13693 consists of the following parts, under the general
28、 title Irrigation equipment Safety devices for chemigation: Part 1: Small plastics valves for chemigationChemigation valve assemblies from DN 75 to DN 350 are to form the subject of a future part 2.DIN EN ISO 13693-1:2017-07 EN ISO 13693-1:2017 (E) 4 1 ScopeThis part of ISO 13693 specifies the gener
29、al requirements and test methods for small plastics-bodied valves used for chemigation, hereinafter referred to as “the device”, intended for operation in irrigation pipe systems which may contain fertilizers and chemicals of the type and concentration used in agriculture.It is applicable to control
30、lable safety devices (also known as backflow preventers) with a reduced pressure zone (RPZ), intended to prevent backflow by back-siphonage or backpressure of irrigation water into an upstream potable water distribution system, whenever the pressure in the latter is lower than that in the system loc
31、ated downstream.It is applicable to such devices of nominal size up to and including DN 50 (2”), with a nominal pressure of PN10, that are capable of working without modification or adjustment at any pressure up to 1 MPa (10 bar), with any pressure variation up to 1 MPa (10 bar), and in permanent du
32、ty at temperatures up to 45 C and for 1 h at 65 C.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest editio
33、n of the referenced document (including any amendments) applies.ISO 7-1, Pipe threads where pressure-tight joints are made on the threads Part 1: Dimensions, tolerances and designationISO 9635-1, Agricultural irrigation equipment Irrigation valves Part 1: General requirements3 Terms and definitionsF
34、or the purposes of this document, the terms and definitions given in ISO 9635-1 and the following apply.3.1controllable safety device with a reduced pressure zonecontrollable safety device with RPZdevice containing two independently-acting check valves (3.7) together with a hydraulically operated, m
35、echanically independent pressure relief valve located between the check valves3.2backflowflow against the intended direction of flow3.3back-siphonagebackflow (3.2) due to a reduction in system pressure, which causes a sub-atmospheric pressure at a site in the systemDIN EN ISO 13693-1:2017-07 EN ISO
36、13693-1:2017 (E) 5 3.4backpressureelevation above the supply pressure of the pressure downstream in a piping system which could cause a reversal of the flow from its intended direction3.5nominal pressurePNmaximum static water pressure, immediately upstream of a small plastics valve used for chemigat
37、ion (3.6), at which the valve is required to operate3.6chemigationapplication of any chemical through an irrigation system3.7check valvevalve which automatically opens by fluid flow in a defined direction and which automatically closes to prevent fluid flow in the reverse direction4 ClassificationTh
38、e nominal and connection sizes of the device shall be in accordance with Table 1.Table 1 Connection sizes of threaded and flanged devicesNominal size DN, mm 8 10 15 20 25 32 40 50Nominal diameter of threaded connections (in accordance with ISO 7-1), inches1/4 3/8 1/2 3/4 1 1 1 2Nominal diameter of f
39、langed connections, mm 40 505 DesignationThe device shall be designated as follows:a) type;b) nominal size (DN) (see Table 1);c) nominal pressure (PN);d) connection type;e) type of plastics material (generic);f) reference to this part of ISO 13693.6 MaterialsThe manufacturer shall state, in the tech
40、nical and sales literature on the device, the types of materials from which the device is made.The device shall be corrosion-resistant.The materials from which the device is manufactured shall be compatible with chemicals normally used in irrigation systems.DIN EN ISO 13693-1:2017-07 EN ISO 13693-1:
41、2017 (E) 6 Where the device may come into contact with potable water, the device and the materials from which it is manufactured shall comply with national standards for potable water.7 Design requirements7.1 GeneralThe design characteristics (see Figure 1) of the device shall be as follows:a) three
42、 pressure zones upstream, intermediate and downstream such that the pressure, P1, in the upstream zone is greater than the pressure, Pi, in the intermediate zone, which is greater than the pressure, P2, in the downstream zone, under static (no flow) and flow conditions;b) P1 Pi 14 kPa (140 mbar);c)
43、intermediate pressure zone connected to the atmosphere, when P1 Pi 14 kPa (140 mbar);d) intermediate pressure zone disconnected from the atmosphere, when P1 14 kPa (140 mbar);e) minimum set discharge flow (backflow rate);f) allows verification, in every zone, of disconnection and sealing of the prot
44、ection devices (obturators, discharge valves).Key1 upstream pressure (P1) zone2 intermediate pressure (Pi) zone3 downstream pressure (P2) zone4 upstream check valve5 downstream check valve6 relief valve7 pressure tap orifice8 funnelaUpstream.bDownstream.Figure 1 Design principleThe internal componen
45、ts of the device shall be accessible for inspection, repair or replacement. These operations shall be possible even when the device is installed. The components shall be able to be replaced without removing the device, without ambiguity (impossibility of reversal or interchange of obturators, diaphr
46、agms, springs, etc.). A visible mark is not sufficient.The settings of the springs shall be fixed and not adjustable.Only the water pressure of the supply network shall be able to operate the control of the internal components of the device.DIN EN ISO 13693-1:2017-07 EN ISO 13693-1:2017 (E) 7 Possib
47、le additional control devices (electric, pneumatic, etc.) shall not adversely affect the backflow protection function.The device shall be installed horizontally, except where the manufacturer states that it can also be installed in the vertical position. The tests shall be carried out in the prescri
48、bed position.7.2 Relief valveWhen the differential pressure between the upstream and downstream check valves is less than 14 kPa (140 mbar), the relief valve shall be open to ensure positive safety (draining the intermediate pressure zone to the atmosphere).The internal vertical distance, h (in the disconnected position), b
