SIST EN 13175:2015

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.813Flüssiggas-Geräte und Ausrüstungsteile - Spezifikation und Prüfung für Ventile und Fittinge an Druckbehältern für Flüssiggas (LPG)Équipements pour GPL et leurs accessoires - Spécifications et essais des équipements et accessoires des réservoirs pour gaz de pétrole liquéfié (GPL)LPG Equipment and accessories - Specification and testing for Liquefied Petroleum Gas (LPG) pressure vessel valves and fittings75.180.01Oprema za industrijo nafte in zemeljskega plina na splošnoEquipment for petroleum and natural gas industries in general23.060.01Ventili na splošnoValves in general23.020.10UH]HUYRDUMLStationary containers and tanksICS:Ta slovenski standard je istoveten z:EN 13175:2014SIST EN 13175:2015en,fr,de01-februar-2015SIST EN 13175:2015SLOVENSKI
STANDARDSIST EN 13175:2003+A2:20071DGRPHãþD



SIST EN 13175:2015



EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 13175
November 2014 ICS 23.060.01 Supersedes EN 13175:2003+A2:2007English Version
LPG Equipment and accessories - Specification and testing for Liquefied Petroleum Gas (LPG) pressure vessel valves and fittings
Équipements pour GPL et leurs accessoires - Spécificationset essais des équipements et accessoires des réservoirs pour gaz de pétrole liquéfié (GPL)
Flüssiggas-Geräte und Ausrüstungsteile - Spezifikation und Prüfung für Ventile und Fittinge an Druckbehältern für Flüssiggas (LPG) This European Standard was approved by CEN on 14 September 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.
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, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
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 13175:2014 ESIST EN 13175:2015



EN 13175:2014 (E) 2 Contents Page Foreword .4 Introduction .5 1 Scope .6 2 Normative references .6 3 Terms and definitions .7 4 Operating conditions .9 5 Materials . 10 5.1 General . 10 5.2 Metallic materials . 10 5.3 Non-metallic components . 11 5.4 Lubricants, sealants and adhesives . 11 6 Design – general requirements . 11 6.1 General . 11 6.2 Seats and seals . 12 6.3 Springs . 12 6.4 Threads . 12 6.5 Flanges . 12 7 Design - specific requirements . 12 7.1 Excess flow valve . 12 7.2 Non-return valve . 13 7.3 Shut-off valves . 13 7.4 Filler valve . 14 7.5 Filler valve with OPD . 15 7.6 Occasional liquid withdrawal valve . 15 7.7 Internal valve . 16 7.8 Vapour equalizing valve . 16 7.9 Multipurpose valve . 16 7.10 Break-away coupling . 16 7.11 Dry disconnect coupling . 16 7.12 Pressure gauge . 18 8 Testing of the design . 18 8.1 General . 18 8.2 Testing of non-metallic components . 18 8.3 Over torquing deformation test . 20 8.4 External leak tightness test . 20 8.5 Internal leak tightness test . 21 8.6 Residual flow test . 21 8.7 Pressure strength test . 22 8.8 Excess flow test . 22 8.9 Endurance test . 23 8.10 Weak section strength test . 24 8.11 Stress cracking test . 24 8.12 Vacuum test . 25 8.13 Flow resistance test . 25 8.14 Filler valve flow test . 25 8.15 OPD test . 25 8.16 Test report . 26 SIST EN 13175:2015



EN 13175:2014 (E) 3 9 Production testing . 26 10 Marking . 26 11 Documentation . 27 12 Packaging . 27 Annex A (normative)
ACME connections . 28 Annex B (normative)
Special low temperature requirements for valves . 32 Annex C (informative)
Inspection of 3 ¼ inch ACME Couplings . 33 C.1 Introduction . 33 C.2 Definitions . 33 C.3 Visual examination . 34 C.4 Dimensional check . 34 Annex D (normative)
Dry disconnect couplings. 36 Annex E (normative)
Production testing and inspection . 41 Bibliography . 44
SIST EN 13175:2015



EN 13175:2014 (E) 4 Foreword This document (EN 13175:2014) has been prepared by Technical Committee CEN/TC 286 “LPG Equipment and accessories - Specification and testing for Liquefied Petroleum Gas (LPG) pressure vessel valves and fittings”, the secretariat of which is held by NSAI. 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 May 2015 and conflicting national standards shall be withdrawn at the latest by May 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 13175:2003+A2:2007. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. This European Standard has been submitted for reference into: — the technical annexes of the ADR [4]. NOTE These regulations take precedence over any clause of this European Standard. It is emphasized that ADR is being revised regularly at intervals of two years which may lead to temporary non-compliances with the clauses of this European Standard. The major changes to this revision include: — reference to the RID and ADN has been removed; — the addition of aluminium alloys and zinc alloys; — additional requirements for brass materials; — change in requirements for non-metallic components, lubricants, sealants and adhesives; — the insertion of filler valve with overfill protection device, dry disconnect coupling requirements and the deletion of plug and cap requirements; — the introduction of Annex C (informative), Inspection of 3 ¼ inch x 6 ACME coupling; — the introduction of Annex D (normative), Dry disconnect couplings. According to the CEN-CENELEC Internal Regulations, the national standards organizations 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, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 13175:2015



EN 13175:2014 (E) 5 Introduction This European Standard calls for the use of substances and procedures that may be injurious to health and/or the environment if adequate precautions are not taken. It refers only to technical suitability; it does not absolve the user from their legal obligations at any stage. It has been assumed in the drafting of this European Standard that the execution of its provisions is entrusted to appropriately qualified and experienced people. All pressures are gauge pressures unless otherwise stated. NOTE This European Standard requires measurement of material properties, dimensions and pressures. All such measurements are subject to a degree of uncertainty due to tolerances in measuring equipment, etc. It may be beneficial to refer to the leaflet “measurement uncertainty leaflet” SP INFO 2000 27 [8]. SIST EN 13175:2015



EN 13175:2014 (E) 6 1 Scope This European Standard specifies minimum requirements for the design, testing and production testing of valves, including appropriate fittings, which are connected to mobile or static LPG pressure vessels above 150 l water capacity. Pressure relief valves and their ancillary equipment, contents gauges and automotive LPG components are outside the scope of this European Standard. This European Standard does not apply to refineries or other process plants. 2 Normative references The 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 edition of the referenced document (including any amendments) applies. EN 549:1994, Rubber materials for seals and diaphragms for gas appliances and gas equipment EN 751-1:1996, Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water - Part 1: Anaerobic jointing compounds EN 751-2:1996, Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water - Part 2: Non-hardening jointing compounds EN 751-3:1996, Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water - Part 3: Unsintered PTFE tapes EN 837-1, Pressure gauges - Part 1: Bourdon tube pressure gauges - Dimensions, metrology, requirements and testing EN 1092-1:2007+A1:2013, Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN designated - Part 1: Steel flanges EN 1267:2012, Industrial valves - Test of flow resistance using water as test fluid EN 1503-1:2000, Valves - Materials for bodies, bonnets and covers - Part 1: Steels specified in European Standards EN 1503-2:2000, Valves - Materials for bodies, bonnets and covers - Part 2: Steels other than those specified in European Standards EN 1503-4:2002, Valves - Materials for bodies, bonnets and covers - Part 4: Copper alloys specified in European Standards EN 1563:2011, Founding - Spheroidal graphite cast irons EN 1759-1:2004, Flanges and their joint - Circular flanges for pipes, valves, fittings and accessories, Class designated - Part 1: Steel flanges, NPS 1/2 to 24 EN 1774:1997, Zinc and zinc alloys - Alloys for foundry purposes - Ingot and liquid EN 1983, Industrial valves - Steel ball valves EN 10270-3:2011, Steel wire for mechanical springs - Part 3: Stainless spring steel wire EN 12164:2011, Copper and copper alloys - Rod for free machining purposes SIST EN 13175:2015



EN 13175:2014 (E) 7 EN 12165:2011, Copper and copper alloys - Wrought and unwrought forging stock EN 12420:2014, Copper and copper alloys - Forgings EN 13547, Industrial valves - Copper alloy ball valves EN 13709:2010, Industrial valves - Steel globe and globe stop and check valves EN 13789:2010, Industrial valves - Cast iron globe valves EN 13799:2012, LPG equipment and accessories - Contents gauges for Liquefied Petroleum Gas (LPG) pressure vessels EN 13906-1:2013, Cylindrical helical springs made from round wire and bar - Calculation and design - Part 1: Compression springs EN 15202:2012, LPG equipment and accessories - Essential operational dimensions for LPG cylinder valve outlet and associated equipment connections EN 60079-0, Explosive Atmospheres - Part 0: Equipment - General requirements (IEC 60079-0) EN ISO 196:1995, Wrought copper and copper alloys - Detection of residual stress - Mercury(I) nitrate test (ISO 196:1978) ISO 7-1:1994, Pipe threads where pressure-tight joints are made on the threads - Part 1: Dimensions, tolerances and designation ISO 301:2006, Zinc alloy ingots intended for castings ISO 2859-1:1999, Sampling procedures for inspection by attributes - Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection ISO 6957:1988, Copper alloys - Ammonia test for stress corrosion resistance ANSI/ASME B1.20.1 - 1983, Pipe threads, general purpose (inch) issued by American National Standards Institute in 1983 ASME B1.5 - 1990, ACME Screw Threads issued by American Society of Mechanical Engineers in 1990 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 liquefied petroleum gas LPG low pressure liquefied gas composed of one or more light hydrocarbons which are assigned to UN 1011, UN 1075, UN 1965, UN 1969 or UN 1978 only and which consists mainly of propane, propene, butane, butane isomers, butene with traces of other hydrocarbon gases 3.2 pressure vessel assembly of the pressure envelope (including the openings and their closures) and non-pressure-retaining parts attached directly to it SIST EN 13175:2015



EN 13175:2014 (E) 8 3.3 maximum allowable pressure maximum pressure for which the equipment is designed Note 1 to entry: All pressures are gauge pressures unless otherwise stated. 3.4 fitting pressure containing component fitted to an LPG pressure system 3.6 internal leak tightness resistance to leakage across the valve seal or other internal sealing components when the valve is closed 3.7 external leak tightness resistance to leakage through the fitting to or from the atmosphere 3.8 residual flow allowable flow through an excess flow or a non-return valve, when the valve is in the closed position 3.9 sealing element non-metallic resilient component which effects a seal by contact with the valve seat 3.10 excess flow valve valve designed to close automatically, with a small residual flow, when the fluid flow passing through it exceeds a predetermined value, and to re-open when the pressure differential across the valve has been restored below a certain value 3.11 non-return valve valve designed to close automatically to restrict reverse flow 3.12 shut-off valve valve to provide a leak tight seal which is operated either manually, remotely or is self-closing 3.13 service valve valve for fluid off-take which is manually operated to provide a leak tight seal 3.14 filler valve valve system for liquid fill service 3.15 plug component which seals a female connection 3.16 cap component which seals a male connection SIST EN 13175:2015



EN 13175:2014 (E) 9 3.17 overfill protection device
OPD device designed to automatically reduce the filling rate to a minimal flow when the fill level reaches a predetermined amount 3.18 occasional liquid withdrawal valve normally blanked valve, used for occasional liquid withdrawal which is designed to be opened by the engagement of a special connector valve 3.19 internal valve valve which has its seal within the profile of the pressure vessel 3.20 self closing valve normally closed valve that provides a leak tight seal, opens by the engagement of a special connector or by fluid passing through it and closes automatically upon removal of the connector or by stopping the fluid flow 3.21 vapour equalizing valve valve which permits vapour to flow in either direction in order to equalize vapour pressure between pressure vessels during liquid transfer, and which incorporates an excess flow valve and a self-closing valve opened by a special connector valve 3.22 multipurpose valve valve which incorporates two or more service functions and which meets the combined requirements of the individual functions 3.23 breakaway coupling coupling which separates at a predetermined section when required and each separated section contains a self-closing shut-off valve, which seals automatically Note 1 to entry: Also referred to as a safe break. 3.24 dry disconnect coupling quick coupling which connects and disconnects with minimum LPG release and each separated section contains a self-closing shut-off valve, which seals automatically 3.25 Standard Temperature and Pressure STP 15,6 °C (288,7 K), 1,013 bar absolute (0,101 3 MPa absolute) 4 Operating conditions 4.1 Valves and fittings designed in accordance with this European Standard shall be suitable for a minimum operating temperature of −20 °C. NOTE In service, temperatures below this can be encountered during short periods, for example, during filling. 4.2 cor some parts of burope and certain applications, temperatures lower than −20 °C can be encountered; for these conditions the requirements of Annex B shall be applied. SIST EN 13175:2015



EN 13175:2014 (E) 10 4.3 Valves and fittings shall be designed for a maximum operating temperature of 65 °C. 4.4 Valves and fittings shall be designed for a maximum allowable pressure of 25 bar. 4.5 Valves and fittings shall be designed for a minimum pressure of 50 mbar absolute. NOTE Vacuum conditions on the valve or fitting, arising from butane at low temperature or evacuation of the pressure vessel can expose the valve or fitting to a vacuum of 50 mbar absolute. 5 Materials 5.1 General 5.1.1 All materials in contact with LPG shall be physically and chemically compatible with LPG under all the normal operating conditions for which the valve or fitting is intended. 5.1.2 Materials for valve or fitting components shall be selected to give adequate strength in service. Consideration shall also be given to other modes of failure such as atmospheric corrosion, brass dezincification, stress corrosion, impact or material failure. 5.1.3 Alternative materials to those listed in 5.2 are not precluded, providing they comply with a standard or specification that ensures control of chemical and physical properties, and quality appropriate to the end use. 5.2 Metallic materials 5.2.1 Metallic materials for valves and fittings shall be steel, stainless steel, copper alloys, aluminium alloys, zinc alloys, or other suitable materials. 5.2.2 For pressure containing components, steel and stainless steels shall comply with EN 1503-1:2000 or EN 1503-2:2000 and copper alloys shall comply with EN 1503-4:2002. 5.2.3 Materials for steel flanges shall be in accordance with EN 1092-1:2007+A1:2013. 5.2.4 Stainless steel for components shall contain not less than 16 % chromium and shall contain not less than 7 % nickel. 5.2.5 Springs shall be manufactured from stainless steel in accordance with EN 10270-3:2011. 5.2.6 Hot stamped brass shall be non-porous and suitable for machining or other processing. Leaded brass shall be CW614N or CW617N in accordance with EN 12420:2014, EN 12164:2011 and EN 12165:2011. Sand-cast brass shall not be used. Cold drawn brass rods shall only be used for machining after adequate testing for internal cracking, porosity or other inclusions and shall be heat treated if required. Components produced from stamping brass shall not exhibit cold shuts also known as folds, or surface defects. 5.2.7 Components manufactured from hot stamped brass or bodies made of drawn brass or machined from brass rod shall be capable of withstanding, without cracking, the stress cracking test (see 8.11). 5.2.8 Spheroidal graphite cast iron shall comply with EN 1563:2011, with an elongation at fracture of more than 18 %. Other ductile irons or cast irons shall not be used. 5.2.9 ZnAl4 and ZnAl4Cu1 shall be in accordance with ISO 301:2006 or EN 1774:1997. 5.2.10 Castings shall be free from inclusions and surface defects which could adversely affect the strength, leak tightness or performance of the valve or fitting. 5.2.11 For guidance on the choice of metallic materials, see EN ISO 11114-1:2012. SIST EN 13175:2015



EN 13175:2014 (E) 11 5.3 Non-metallic components All non-metallic materials in contact with LPG shall not distort, harden or adhere to the body or seat face to such an extent as to impair the function of the valve. All rubber materials shall also comply with the requirements of EN 549:1994. The ozone test in EN 549:1994 shall only be carried out where gaskets/seals are exposed to atmosphere. NOTE For guidance on the choice of non-metallic materials, see EN ISO 11114-2:2013. 5.4 Lubricants, sealants and adhesives Where used on threads and seals; lubricants, sealants, and adhesives shall be compatible with LPG and shall not interfere with the operation of the valve or fitting. Sealants shall comply with EN 751-1:1996, EN 751-2:1996 or EN 751-3:1996. 6 Design – general requirements 6.1 General 6.1.1 Valves and fittings shall be capable of withstanding all service conditions, including fatigue, to which they will be subjected during normal conditions of use (or carriage where appropriate) as detailed in Table 3. 6.1.2 Moving parts shall have sufficient clearance to ensure freedom of movement under all normal conditions of service. Where necessary, means of guidance shall be provided to ensure correct seating or sealing. 6.1.3 All components vital to the function of a valve or fitting shall be secured to prevent disassembly during normal operation. Internal valves shall be either automatically operated or remotely operated to prevent inadvertent operation. 6.1.4 Valves and fittings shall be designed to ensure external leak tightness, internal leak tightness and their function shall not be affected as a result of vibration during transportation. 6.1.5 For mobile applications, the valves and fittings shall be capable of withstanding a deceleration of 100 times gravity in the X, Y and Z axis and shall remain leak tight. 6.1.6 In transport applications, valves and fittings directly connect to the shell (including the internal stop-valve and its seating) shall be protected against the danger of being wrenched off by external stresses. This may be achieved by the provision of weak sections or shear grooves in the valve or fitting that allows the sealing mechanism to remain within the shell after failure. These valves and fittings shall fulfil the test requirements of 8.10. 6.1.7 The design shall take account of the use of dissimilar materials. EXAMPLE Electrochemical corrosion or material expansion. 6.1.8 Electrical equipment, when used with a valve or fitting shall meet the requirements of EN 60079-0 where appropriate. 6.1.9 Valves shall have their flow resistance determined using water as a test fluid. 6.1.10 Possible stress corrosion shall be eliminated by either design or heat treatment. SIST EN 13175:2015



EN 13175:2014 (E) 12 6.1.11 The design shall take account of the following: — minimizing the use of raw materia
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