SIST EN 14267:2004

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Namakalna tehnika – Hidranti za namakanjeBewässerungsverfahren - Hydranten für BewässerungswasserTechniques d'irrigation - Bornes d'irrigationIrrigation techniques - Irrigation hydrants65.060.35Namakalna in drenažna opremaIrrigation and drainage equipmentICS:Ta slovenski standard je istoveten z:EN 14267:2004SIST EN 14267:2004en01-november-2004SIST EN 14267:2004SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14267July 2004ICS 65.060.35English versionIrrigation techniques - Irrigation hydrantsTechniques d'irrigation - Bornes d'irrigationBewässerungsverfahren - Hydranten fürBewässerungswasserThis European Standard was approved by CEN on 6 May 2004.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 Central Secretariat 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 Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2004 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14267:2004: ESIST EN 14267:2004

Irrigation hydrant - Example of technical data sheet (responsibility of the manufacturer).36 A.1 Identification of the hydrant.36 A.2 Hydrant body.36 A.3 Outlets.37 A.4 Particular functions.37 A.5 Methods of use.38 Bibliography.39
EN ISO 228-1, Pipe threads where pressure-tight joints are not made on the threads – Part 1: Dimensions, tolerances and designation (ISO 228-1:2000). EN ISO 4628-1:2003, Paints and varnishes – Evaluation of degradation of coatings – Designation of quantity and size of defects, and of intensity of uniform changes in appearance – Part 1: General introduction and designation system (ISO 4628-1:2003). ISO 4064-1, Measurement of water flow in closed conduits – Meters for cold potable water – Part 1: Specifications. ISO 4064-3, Measurement of water flow in closed conduits – Meters for cold potable water – Part 3: Test methods and equipment. ISO 4200:1991, Plain end steel tubes, welded and seamless – General tables of dimensions and masses per unit length. ISO 9227, Corrosion tests in artificial atmospheres – Salt spray tests. ISO 9635:1990, Irrigation equipment – Hydraulically operated irrigation valves. SIST EN 14267:2004

irrigation hydrant valve apparatus intended to ensure the delivery of irrigation water supplied to a user network from a pressurised distribution network which is generally subterranean buried The irrigation hydrant consists of the body of the hydrant and one or more distribution outlets fitted to it. It is characterised by the diameter of the body and by the diameters of the outlets (see Figure 1). It features at least a "shut-off" function and a "metering" function. It may also integrate the "flow-rate limitation" and "pressure regulation" functions. NOTE Throughout the rest of this document, "irrigation hydrant" is also referred to as the hydrant. 3.2 pressurised water distribution network for irrigation collective network which is generally positioned underground which supplies irrigation water to several user networks 3.3 user network distribution network belonging to the user which supplies land irrigation systems 3.4 nominal diameter (DN) alpha-numerical designation of dimension for the components of a piping network used for reference purposes. It comprises the letters DN followed by a whole number without units, which is indirectly related to the actual dimensions, in millimetres, of the bore or the external diameter of the end connections NOTE The number which follows the letters DN does not represent a measurable value and should not be used for calculation purposes, except where specified in the relevant standard. [EN ISO 6708:1995] 3.5 nominal pressure (PN) alpha-numerical term used for reference purposes and relating to a combination of mechanical and dimensional characteristics of a pipeline network component. It comprises the letters PN followed by a whole number without unit NOTE 1 The number following the letters PN does not represent a measurable value and it should not be used for calculation purposes except where specified in the relevant standard. NOTE 2 The term PN is not significant unless it is associated with the number of the relevant component standard. NOTE 3 The permissible pressure of a component of a pipeline network depends on the PN value, the material and the design of the component, its permissible temperature, etc., and is given in the tables of pressure/temperature relationships specified in the relevant standards.
NOTE 4 It is planned that all components with the same PN and DN designations have the same connection dimensions for compatible flange types. [EN 1333:1996] SIST EN 14267:2004

80 X a X a X a
100 X a X a X a X a
150 X a X a X a X a X a
200 X a X a X a X a X a X a a Possible solutions. b See Figure 1. 4.3 By PN PN 10, PN 16 and PN 25. 4.4 By flow-rate limiter class Class 1 flow-rate limiter: can operate up to a maximum differential pressure of 5 bar; Class 2 flow-rate limiter: can operate up to a maximum differential pressure of 10 bar. 5 Quality of irrigation waters 5.1 General Irrigation water may permanently or occasionally contain mineral or organic materials in variable proportions. Three qualities of water have been defined for testing purposes. SIST EN 14267:2004

solid particles of classes 1 + 2 + 3 (2,0 ± 0,2) g/l with over 95 % of silica SiO2 Class 1 content Granulometry between 20 µm and 60 µm
fraction by mass (25 ± 5) % of the total content of solid particles Class 2 content Granulometry between 60 µm and 320 µm fraction by mass (50 ± 10) % of the total content of solid particles Class 3 content Granulometry between 320 µm and 1 600 µm fraction by mass (25 ± 5) % of the total content of solid particles 5.3 Water quality 1b To obtain water quality 1b, from water quality 1a, it shall be added a total load of particles of 100 mg/l of synthetic fibres whose characteristics are the following: Synthetic fibre:  approximately volume mass: < 1 000 kg/m3;  resistance to traction: > 400 MPa;  module of elasticity: > 12 GPa;  wetting (immersion time): < 90 s;  thickness of fibre: approximately 40 µm to 50 µm;  width: 0,6 mm to 0,7 mm;  length: 15 mm to 20 mm. 5.4 Water quality 1c Clean water 5.5 Water quality 2 Water quality 2 is water, which corresponds to the transportation of large particles through the hydrant.  Particles: form: spherical balls; number of balls: 48; density: 24 balls between 0,9 and 1,1; 24 balls greater than 2; SIST EN 14267:2004

± 2 %. 6 Requirements 6.1 Dimensional hydrant specifications
Figure 1 — Hydrant dimensions Face to face (L2) and face to axis (H and L1) dimensions shall be specified in the manufacturer's documentation. DNP: nominal diameter of the outlets. DNB: nominal diameter of the hydrant body. 6.2 Requirements for total head loss in the hydrant The total head loss (∆h) measured between the upstream flange which connects to the distribution network and connection to the user network shall not exceed, for the nominal flow-rate of the hydrant, the following values according to the classification given in 4.1 and 8.4:  for type 1: maximum head loss of 0,5 bar;  for type 2: maximum head loss of 0,8 bar;  for type 3: maximum head loss of 0,8 bar;  for type 4: maximum head loss of 1,1 bar. The flow-rate passing through the body of the hydrant (DNB, see Figure 1) shall be established at the nominal flow-rate of the hydrant (QNB) in the following manner:  The test is carried with wide-open hydrant and with regulation elements deactivated. SIST EN 14267:2004

(sum of the flow-rates of the
outlets operating simultaneously) m3/h Nominal diameter (DN) of
connecting flange 30 65 45 80 80 100 120 150 160 200 The base shall enable an air release valve to be fitted. 6.3.3.3 Closure device 6.3.3.3.1 General This device is designed to operate with the hydrant fully open. Under no circumstances should it be used as a regulating device. The hydrant may be equipped with a lubrification device for the screw-nut system. The obturator shall be rigidly connected to the device for manoeuvring the closure valve in order to control phenomena liable to generate pressure rams. 6.3.3.3.2 Type of closing system  Wheel:  the total number of revolutions of the wheel shall be less than 35. The closing direction shall be FSH type;  this number will be declared by the manufacturer;  other systems:  in the case of other closing systems, the closing time of the hydrant (tcNB) shall not exceed the time defined in 7.6 of ISO 9635:1990;  this closing time shall be declared by the manufacturer; in all cases, pressure ram tests shall be used to verify these parameters (see 8.5). 6.3.3.4 Hydrant head The hydrant head comprises one or more distribution openings designed to accommodate outlets; these openings are identified. 6.3.3.5 Automatic drainage The hydrant shall be designed to enable an automatic drainage device to be fitted. SIST EN 14267:2004

is the measurement error (in percentage); Vr
is the volume recorded by the meter; Vd
is the actual volume flowing through the meter. SIST EN 14267:2004

Key 1 Operating wheel 2 Operating lever Figure 2 — Manually applied permissible forces The permissible force F applied manually during opening and closing is given in Table 8. A greater force Fmax. may be applied for pushing the stopper into place in its seat or lifting it from its seat: Fmax. = X F The values of the coefficient X are given in Table 8. Table 8 — Manually applied permissible forces Dimensions, force and coefficient Values a D; L (in millimetres) 100 125 160 200 250 ≥ 315 F (in newtons) 350 365 395 425 465 500 X 1,5 1,75 2,0 2,0 2,0 2,0 a Use a linear interpolation for intermediate values D, L.  The stopper shall be closed by turning the wheel clockwise;  this test shall be carried out at a pressure 1 bar lower than the calibration of the regulator and at the nominal flow-rate of the hydrant. 8.4 Measurement of total head loss This test shall be conducted in compliance with EN 1267. SIST EN 14267:2004

2,5 m/s, and that the calibration pressure of any pressure regulators present is greater than 3 bar. During the test that follow, the pressure at the input to the pipeline should be kept constant and equal to the value obtained at a permanent speed of V = 2 m/s with a tolerance of ± 5 %. 8.5.6 Test operations Once this permanent flow speed is established, close the stopper, either at a speed of one turn of the wheel per second for hydrants with mechanically controlled stoppers or in the nominal closing time of the hydrant (tcNB) defined by the manufacturer for hydrants with hydraulically controlled stoppers. SIST EN 14267:2004
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