SIST EN 13175:2019+A1:2020

SLOVENSKI STANDARD
SIST EN 13175:2019+A1:2020
01-september-2020
Nadomešča:
SIST EN 13175:2019
Oprema in pribor za utekočinjeni naftni plin (UNP) - Specifikacija in preskušanje
ventilov in fitingov za tlačne posode za UNP (vključuje dopolnilo A1)
LPG Equipment and accessories - Specification and testing for Liquefied Petroleum Gas
(LPG) pressure vessel valves and fittings
Flüssiggas-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)
Ta slovenski standard je istoveten z: EN 13175:2019+A1:2020
ICS:
23.020.32 Tlačne posode Pressure vessels
23.060.01 Ventili na splošno Valves in general
75.180.01 Oprema za industrijo nafte in Equipment for petroleum and
zemeljskega plina na splošno natural gas industries in
general
SIST EN 13175:2019+A1:2020 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 13175:2019+A1:2020

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SIST EN 13175:2019+A1:2020


EN 13175:2019+A1
EUROPEAN STANDARD

NORME EUROPÉENNE

June 2020
EUROPÄISCHE NORM
ICS 23.060.01
English Version

LPG Equipment and accessories - Specification and testing
for Liquefied Petroleum Gas (LPG) pressure vessel valves
and fittings
Équipements pour GPL et leurs accessoires - Flüssiggas-Geräte und Ausrüstungsteile - Spezifikation
Spécifications et essais des équipements et accessoires und Prüfung für Ventile und Fittinge an
des réservoirs pour gaz de pétrole liquéfié (GPL) Druckbehältern für Flüssiggas (LPG)
This European Standard was approved by CEN on 11 February 2019 and includes Amendment 1 approved by CEN on 2 June
2020.

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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, 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: Rue de la Science 23, B-1040 Brussels
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13175:2019+A1:2020 E
worldwide for CEN national Members.

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SIST EN 13175:2019+A1:2020
EN 13175:2019+A1:2020 (E)
Contents Page

European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 8
3.1 General terms . 8
3.2 ACME couplings terms . 10
4 Operating conditions . 10
5 Materials . 11
5.1 General . 11
5.2 Metallic materials . 11
5.3 Non-metallic components . 11
5.4 Lubricants, sealants and adhesives . 12
6 Design – general requirements . 12
6.1 General . 12
6.2 Seats and seals . 13
6.3 Springs . 13
6.4 Threads . 13
6.5 Flanges . 13
7 Design - specific requirements . 13
7.1 Excess flow valve . 13
7.2 Non-return valve . 14
7.3 Shut-off valves . 14
7.4 Filler valve . 15
7.5 Filler valve with OPD . 16
7.6 Occasional liquid withdrawal valve (OLW) . 16
7.7 Occasional liquid withdrawal valve adaptor . 17
7.8 Internal valve . 17
7.9 Vapour equalizing valve . 18
7.10 Multipurpose valve . 18
7.11 Break-away coupling . 18
7.12 Dry disconnect coupling . 18
7.13 Pressure gauge . 19
8 Testing of the design . 20
8.1 General . 20
8.2 Testing of non-metallic components . 23
8.3 Over torquing deformation test . 23
8.4 External leak tightness test . 24
8.5 Internal leak tightness test . 24
8.6 Residual flow test . 25
8.7 Pressure strength test . 25
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8.8 Excess flow test . 25
8.9 Endurance test . 27
8.10 Weak section strength test . 28
8.11 Stress cracking test . 28
8.12 Vacuum test . 29
8.13 Flow resistance test . 29
8.14 Filler valve flow test . 29
8.15 OPD test . 29
8.16 Test report . 30
9 Production testing . 30
10 Marking . 30
11 Documentation . 31
12 Packaging . 32
Annex A (normative) ACME connections . 33
Annex B (normative) Special low temperature requirements for valves . 36
Annex C (informative) Inspection of 3 1/4 inch ACME couplings . 37
C.1 Introduction. 37
C.2 Definitions . 37
C.3 Visual examination . 37
C.4 Dimensional check . 38
Annex D (normative) Dry disconnect couplings . 40
Annex E (informative) Connection and adaptor designs of preferred Occasional Liquid
Withdrawal valves . 45
Annex F (normative) Production testing and inspection . 48
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Directive 2014/68/EU aimed to be covered . 50

Bibliography . 52


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EN 13175:2019+A1:2020 (E)
European foreword
This document (EN 13175:2019+A1:2020) has been prepared by Technical Committee CEN/TC 286
“Liquefied petroleum gas equipment and accessories”, 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 December 2020, and conflicting national standards shall
be withdrawn at the latest by December 2020.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document includes Amendment 1 approved by CEN on 2020-05-08.
This document supersedes !EN 13175:2019".
The start and finish of text introduced or altered by amendment is indicated in the text by tags !".
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.
!Deleted text"
!This document has been submitted for reference in
— the RID and
— the technical annexes of the ADR
NOTE These regulations take precedence over any clause of this standard. It is emphasised that RID/ADR are
being revised regularly at intervals of two years which may lead to temporary non-compliances with the clauses of
this standard. "
According to the CEN-CENELEC Internal Regulations, the national standards organisations 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, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
the United Kingdom.
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Introduction
This document 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 document that the execution of its provisions is entrusted to
appropriately qualified and experienced people.
All pressures are gauge pressures unless otherwise stated.
NOTE This document 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 can be
beneficial to refer to the leaflet “measurement uncertainty leaflet” SP INFO 2000 27 [4].
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1 Scope
This document 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 document.
This document does not apply to refineries or other process plants.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. 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 837-1:1996, Pressure gauges — Part 1: Bourdon tube pressure gauges — Dimensions, metrology,
requirements and testing
EN 1092-1:2018, 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 1563:2018, 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 1983:2013, Industrial valves — Steel ball valves
EN 10270-3:2011, Steel wire for mechanical springs — Part 3: Stainless spring steel wire
EN 12164:2016, Copper and copper alloys — Rod for free machining purposes
EN 12165:2016, Copper and copper alloys — Wrought and unwrought forging stock
EN 12420:2014, Copper and copper alloys — Forgings
EN 12516-1:2014+A1:2018, Industrial valves — Shell design strength — Part 1: Tabulation method for
steel valve shells
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EN 12516-4:2014+A1:2018, Industrial valves — Shell design strength — Part 4: Calculation method for
valve shells manufactured in metallic materials other than steel
EN 13445-2:2014, Unfired pressure vessels — Part 2: Materials
EN 13547:2013, 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 60079-0:2012, Explosive atmospheres — Part 0: Equipment — General requirements (IEC 60079
0:2011, modified)
EN ISO 196:1995, Wrought copper and copper alloys — Detection of residual stress — Mercury(I) nitrate
test (ISO 196:1978)
EN ISO 11114-1:2012, Gas cylinders — Compatibility of cylinder and valve materials with gas contents —
Part 1: Metallic materials (ISO 11114-1:2012)
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
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3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1 General terms
3.1.1
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
3.1.2
pressure vessel
assembly of the pressure envelope (including the openings and their closures) and non-pressure-
retaining parts attached directly to it
3.1.3
maximum allowable pressure
maximum pressure for which the equipment is designed
Note 1 to entry: All pressures are gauge pressures unless otherwise stated.
3.1.4
fitting
pressure containing component fitted to an LPG pressure system
3.1.5
internal leak tightness
resistance to leakage across the valve seal or other internal sealing components when the valve is closed
3.1.6
external leak tightness
resistance to leakage through the fitting to or from the atmosphere
3.1.7
residual flow
allowable flow through an excess flow or a non-return valve, when the valve is in the closed position
3.1.8
sealing element
non-metallic resilient component which effects a seal by contact with the valve seat
3.1.9
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
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3.1.10
non-return valve
valve designed to close automatically to restrict reverse flow
3.1.11
shut-off valve
valve to provide a leak tight seal which is operated either manually, remotely or is self-closing
3.1.12
service valve
valve for fluid off-take which is manually operated to provide a leak tight seal
3.1.13
filler valve
valve system for liquid fill service
3.1.14
plug
component which seals a female connection
3.1.15
cap
component which seals a male connection
3.1.16
overfill protection device
OPD
device designed to automatically reduce the filling rate to a minimal flow when the fill level reaches a
predetermined amount
3.1.17
occasional liquid withdrawal valve
OLW valve
normally blanked valve, used for occasional liquid withdrawal which is designed to be opened by the
engagement of a special connector valve
3.1.18
internal valve
valve which has its seal within the profile of the pressure vessel
3.1.19
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
3.1.20
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
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3.1.21
multipurpose valve
valve which incorporates two or more service functions and which meets the combined requirements of
the individual functions
3.1.22
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.
3.1.23
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
3.1.24
Standard Temperature and Pressure
STP
15,6 °C (288,7 K), 1,013 bar absolute (0,101 3 MPa absolute)
3.2 ACME couplings terms
3.2.1
male coupling
coupling with a male thread
3.2.2
female coupling
coupling which includes a female threaded loose nut on a centre spigot
4 Operating conditions
4.1 Valves and fittings designed in accordance with this document 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 For some parts of Europe and certain applications, temperatures lower than −20 °C can be
encountered; for these conditions the requirements of Annex B shall be applied.
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 30 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.
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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 Shell materials shall be selected in EN 12516-1:2014+A1:2018, EN 12516-4:2014+A1:2018 or
EN 13445-2:2014.
5.2.3 Materials for steel flanges shall be in accordance with EN 1092-1:2018.
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 12164:2016 and
EN 12165:2016. 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 1563:2018, 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.
...