EN 1487:2014

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Ventili v stavbah - Varnostni bloki - Preskusi in zahteveGebäudearmaturen - Hydraulische Sicherheitsgruppen - Prüfungen und AnforderungenRobinetterie de bâtiment - Groupes de sécurité hydraulique - Essais et exigencesBuilding valves - Hydraulic safety groups - Tests and requirements91.140.60Sistemi za oskrbo z vodoWater supply systems23.060.01Ventili na splošnoValves in generalICS:Ta slovenski standard je istoveten z:EN 1487:2014SIST EN 1487:2014en,fr,de01-oktober-2014SIST EN 1487:2014SLOVENSKI
STANDARDSIST EN 1487:20001DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1487
July 2014 ICS 91.140.60 Supersedes EN 1487:2000English Version
Building valves - Hydraulic safety groups - Tests and requirements
Robinetterie de bâtiment - Groupes de sécurité hydraulique - Essais et exigences
Gebäudearmaturen - Hydraulische Sicherheitsgruppen - Prüfungen und Anforderungen This European Standard was approved by CEN on 22 May 2014.
CEN members are bound to comply with the CEN/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 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 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 the official versions.
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B-1000 Brussels © 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1487:2014 ESIST EN 1487:2014

2 Contents Page Foreword .4 Introduction .6 1 Scope .7 2 Normative references .7 3 Terms and definitions .8 4 Materials and surface finishes . 11 4.1 General . 11 4.2 Materials . 11 4.3 Detection of residual stress . 11 4.3.1 Test . 11 4.3.2 Test method (Procedure) . 11 4.3.3 Requirements . 12 4.4 Outside visible surfaces . 12 4.4.1 Surfaces without coatings . 12 4.4.2 Surfaces with coatings . 13 4.5 Corrosion resistance . 13 4.5.1 Test method . 13 4.5.2 Requirements . 13 4.6 Coating adherence. 13 4.6.1 Test method . 13 4.6.2 Requirements . 14 4.7 Compatibility with the products used for disinfection of the networks . 14 4.7.1 General . 14 4.7.2 Test method . 14 4.7.3 Requirements . 14 5 Design and dimensional requirements . 14 5.1 General guidance . 14 5.2 Dimensional characteristics . 15 5.2.1 End connections . 15 5.3 Test port . 17 5.4 Pressure tapping. 17 5.5 Hydraulic safety valve outlet connection to air break to drain . 18 5.6 Hydraulic safety valve discharge connection to drain device . 18 5.7 Exclusions . 18 5.8 Replacing of the safety valve . 18 5.9 Check valve . 18 6 Apparatus . 18 6.1 General . 18 6.2 Tolerances of parameters and accuracy of measure instruments . 18 6.2.1 Tolerances on set parameters . 18 6.2.2 Accuracy of measuring instruments . 19 6.2.3 Test media . 19 7 Hydraulic tests and requirements . 19 7.1 Flow rate test . 19 7.1.1 Procedure . 19 7.1.2 Requirement . 19 7.2 Tightness test . 19 SIST EN 1487:2014

Test sequences . 34
4 Foreword This document (EN 1487:2014) has been prepared by Technical Committee CEN/TC 164 “Water Supply”, the secretariat 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 or by endorsement, at the latest by January 2015, and conflicting national standards shall be withdrawn at the latest by January 2015. 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. This document supersedes EN 1487:2000. The main changes compared to EN 1487:2000 are as follows: a) the Scope has been modified to nominal sizes DN 15 to DN 25; b) Normative references were updated; c) Terms and definitions were changed; d) subclause 4.1 (general wording for materials) was modified; e) subclauses 4.3 (Detection of residual stress), 4.4 (Outside visible surfaces), 4.5 (Corrosion resistance), 4.6 (Coating adherence) and 4.7 (Compatibility with the products used for disinfection of the networks) were added; f) subclauses 5.2 (Dimensional characteristics), 5.3 (Test port) and 5.4 (Pressure tapping) were modified; g) subclause 5.7 (Other threads) was deleted; h) subclauses 5.8 (Replacing of the safety valve) and 5.9 (Check valve) were added; i) Clause 6 (Apparatus) was added, thus renumbering of the following clauses was necessary; j) Clause 7 (Hydraulic tests and requirements) was modified; k) Clause 8 (Acoustic tests and requirements) was moved to Clause 11 and modified editorially; l) Clause 9 (Tests and requirements of the components of the hydraulic safety group) was modified; m) Clause 10 (Resistance to thermal shocks) was added; n) Clause 12 (Classification) was modified; o) Clause 13 (Designation) was modified editorially; p) Clause 15 (Technical documents, presentation at delivery) was added; q) informative Annex A was replaced by informative Annex A (Test sequences). SIST EN 1487:2014

6 Introduction In respect of potential adverse effect on the quality of water intended for human consumption, caused by the product covered by this standard: a) This standard provides no information as to whether the product may be used without restriction in any of the Member States of the EU or EFTA. b) It should be noted that, whilst awaiting the adoption of verifiable European criteria, existing national regulations concerning the use and or the characteristics of this product remain in force. SIST EN 1487:2014

1) All pressures are gauge unless otherwise stated. SIST EN 1487:2014

8 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) EN ISO 3822-1, Acoustics - Laboratory tests on noise emission from appliances and equipment used in water supply installations - Part 1: Method of measurement (ISO 3822-1) EN ISO 3822-3, Acoustics - Laboratory tests on noise emission from appliances and equipment used in water supply installations - Part 3: Mounting and operating conditions for in-line valves and appliances (ISO 3822-3) EN ISO 4628-3, Paints and varnishes - Evaluation of degradation of coatings - Designation of quantity and size of defects, and of intensity of uniform changes in appearance - Part 3: Assessment of degree of rusting (ISO 4628-3) EN ISO 6509, Corrosion of metals and alloys - Determination of dezincification resistance of brass (ISO 6509) ISO 6957, Copper alloys — Ammonia test for stress corrosion resistance 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 hydraulic safety group safety device that limits the pressure in hot water heaters, prevents the backflow of water into the main circuit, prevents the discharged water from coming into contact with the water in the water heater, allows the function of the backflow prevention to be controlled and isolates and drains the water heater for maintenance services Note 1 to entry: A hydraulic safety group is comprised of at least the following items in a single unit, in an upstream to downstream order, as shown in Table 1. Table 1 — Components of hydraulic safety groups
DN 15 DN 20 DN 25 isolating valve 1 1 1 test port for monitoring the check valve 1 1 1 check valve 1 1 1 isolating valve 1a 1a 1a additional outlet connection 1a 1a 1a pressure safety valve 1 1 1 drain device or drain function 1 1 1 air break to drain 1 1 1 pressure tapping 1a 1a 1a a Optional. 3.2 isolating valve valve that allows the water heater to be isolated from the potable water supply Note 1 to entry: If a second valve is fitted, it is placed between the check valve and safety valve. SIST EN 1487:2014

10 3.12 opening pressure (Po) 3.12.1 Po, water pressure at which the pressure safety valve opens as indicated by the appearance of water at the discharge connection of the hydraulic safety group Note 1 to entry: See Figure 1. 3.12.2 Po, steam pressure at which the pressure safety valve opens as indicated by the appearance of steam at the discharge connection of the hydraulic safety group 3.13 rating pressure (Pdn) pressure at which the discharged flow is above the limit given in Table 9 and Table 10 Note 1 to entry: See Figure 1. 3.14 closing pressure (Pf) pressure at which the pressure safety valve closes after having reached the rating pressure Note 1 to entry: See Figure 1.
Key P pressure t time Figure 1 — Pressures SIST EN 1487:2014

12 Test specimen: e) The test specimen consists of three samples of a single assembled product. The test specimen is inserted into the test enclosure under no stress. Instructions: f) Rinse the test specimens with a clean non-chlorinated solvent (for example, ethanol). g) Let them dry in the air. h) Insert the test specimens into the test enclosure along with the ammonia solution. The test enclosure volume is to be (10 ± 1) l. i) The volume of the solution inserted is to be 200 ml for 3 l of total volume of the container. j) Place the test specimens in the container in such a way that they will not touch each other and that they will not be in contact with the solution. k) After an exposure of 24h 20+−, remove the test specimens and rinse them. 4.3.3 Requirements The test is positive if at least two samples are in accordance with the test in 7.2. 4.4 Outside visible surfaces 4.4.1 Surfaces without coatings Surfaces without coatings shall be free from: a) scab; b) crazing; c) sand inclusion; d) heat marks from machining; e) bumping or nipping damage from tools; f) scratches; g) pits or porosity: surface defects in the base metal; h) shrinkage cavities: absence of "feed" in foundry or in plastic injection; i) cutting and grazing: grazing due to handling or to bumps during transportation; j) burns: surface rough and with greyish appearance; k) orange skin effect: defect of smoothing (similar to an orange skin). The requirements of a), c), d), e), f) h), i), j), k) are fulfilled if not visible with naked eye from 300 mm distance under daylight conditions. SIST EN 1487:2014
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