Clamp type coupling assemblies for liquefied petroleum gas (LPG) transfer hoses

This European Standard specifies the dimensions, designation, materials, marking and testing requirements for a range of hose fittings which may be used with rubber/plastic hoses for the transfer of liquefied petroleum gas, LPG, in liquid or vapour phase and natural gas. The maximum working pressure is 25 bar1). For normal operation the working temperature range is from -30 °C up to 70 °C and for low temperature operation (LT) it is from -50 °C up to 70 °C. The nominal size for hose fittings with internal and external threads is from DN 15 to DN 75 and for hose fittings with flanges DN 15 to DN 200. In addition to the fittings described in this European Standard, threaded connections according to EN 14420-5 as well as hose fittings with screwed ferrules according to EN 14424 up to DN 25 for LPG could be used.

Schlaucharmaturen mit Klemmfassung für Schläuche zur Übergabe von Flüssiggas (LPG)

Diese Europäische Norm legt eine Reihe von Schlaucharmaturen fest, die mit Schläuchen aus Gummi/Kunststoff für den Transport von Flüssiggas LPG (flüssig oder gasförmig) und Erdgas verwendet werden können.
Der höchst zulässige Arbeitsdruck beträgt 25 bar.
Der Arbeitstemperaturbereich beträgt –30 °C bis 70 °C und für LT-(Low temperature) Anwendungen –50 °C bis 70 °C.
Die Nennweite von Schlaucharmaturen mit Innen- und Außengewinde umfasst DN 15 bis DN 75, von Schlaucharmaturen mit Flanschen DN 15 bis DN 200.
Ergänzend zu den in dieser Norm beschriebenen Armaturen können auch Gewindeanschlüsse nach EN 14420-5 sowie Schlaucharmaturen mit Schraubhülsen nach EN 14424 bis DN 25 für LPG eingesetzt werden.

Raccords avec collier de serrage pour flexibles de transvasement de gaz de pétrole liquéfié (GPL)

La présente Norme européenne décrit une gamme de raccords utilisables avec des flexibles en caoutchouc/plastique pour le transvasement de gaz de pétrole liquéfiés - GPL - (en phase liquide ou vapeur) et de gaz naturels.
La pression de service maximale est de 25 bar.
La plage de températures de service est de - 30°C à + 70°C et pour des usages à basses températures de
- 50°C à + 70°C.
Les diamètres nominaux des raccords pour flexibles à filetages intérieurs et extérieurs sont de DN 15 à DN 75 et ceux des raccords pour flexibles à brides sont de DN 15 à DN 200.
En plus des raccords décrits dans la présente norme, des raccords filetés conformes à l’EN 14420-5 ainsi que des raccords pour flexibles avec bagues vissées conformes à l’EN 14424 jusqu’à DN 25 pour GPL pourraient être utilisés.

Cevne armature z objemkami za pretočne cevi za utekočinjeni naftni plin (LPG)

Ta evropski standard določa zahteve za dimenzije, opisovanje, materiale, označevanje in preskušanje za vrsto cevnih fitingov, ki se lahko uporabljajo z gumenimi/polimernimi cevmi za prevoz utekočinjenega naftnega plina, LPG, v tekočem ali plinastem stanju in zemeljskega plina. Največji delovni tlak je 25 barov1). Pri običajnem delovanju je temperatura od -30 °C do 70 °C, pri delovanju pri nizkih temperaturah pa od -50 °C do 70 °C. Nominalna velikost cevnih fitingov z notranjimi in zunanjimi navoji je od DN 15 do DN 75, za cevne fitinge s prirobnicami pa od DN 15 do DN 200. Poleg fitingov iz tega evropskega standarda se lahko za LPG uporabljajo tudi navojni priključki v skladu z EN 14420-5 in cevni fitingi z vijačnimi pušami v skladu z EN 14424 do velikosti DN 25.

General Information

Status
Published
Public Enquiry End Date
24-Dec-2010
Publication Date
04-Jul-2013
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
03-Jul-2013
Due Date
07-Sep-2013
Completion Date
05-Jul-2013

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Schlaucharmaturen mit Klemmfassung für Schläuche zur Übergabe von Flüssiggas (LPG)Raccords avec collier de serrage pour flexibles de transvasement de gaz de pétrole liquéfié (GPL)Clamp type coupling assemblies for liquefied petroleum gas (LPG) transfer hoses83.140.30Cevi, fitingi in ventili iz polimernih materialovPlastics pipes, fittings and valvesICS:Ta slovenski standard je istoveten z:EN 14422:2013SIST EN 14422:2013en,fr,de01-september-2013SIST EN 14422:2013SLOVENSKI

STANDARDSIST EN 14422:2005/AC:2006SIST EN 14422:20051DGRPHãþD
SIST EN 14422:2013
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 14422
June 2013 ICS 23.040.70 Supersedes EN 14422:2004English Version
Clamp type coupling assemblies for liquefied petroleum gas (LPG) transfer hoses

Raccords avec collier de serrage pour flexibles de transvasement de gaz de pétrole liquéfié (GPL)

Schlaucharmaturen mit Klemmfassung für Schläuche zur Übergabe von Flüssiggas (LPG) This European Standard was approved by CEN on 8 May 2013.

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
Management Centre:
Avenue Marnix 17,

B-1000 Brussels © 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14422:2013: ESIST EN 14422:2013

EN 14422:2013 (E) 2 Contents

Page Foreword ..............................................................................................................................................................3 1 Scope ......................................................................................................................................................4 2 Normative references ............................................................................................................................4 3 Terms and definitions ...........................................................................................................................5 4 Requirements .........................................................................................................................................5 4.1 General ....................................................................................................................................................5 4.2 Resistance of the fitting materials to the fluid ....................................................................................6 4.3 Maximum working pressures and temperatures ................................................................................6 4.4 Welding connections .............................................................................................................................6 5 Dimensions and designation ................................................................................................................6 5.1 Dimensions .............................................................................................................................................6 5.2 Ordering designation system ............................................................................................................ 17 6 Materials .............................................................................................................................................. 17 6.1 General ................................................................................................................................................. 17 6.2 Hose tails and union nuts .................................................................................................................. 17 6.3 Weld-neck collars and weld-neck flanges ........................................................................................ 18 6.4 Loose flanges ...................................................................................................................................... 18 6.5 Clamp shells ........................................................................................................................................ 19 6.6 Surface finish ...................................................................................................................................... 19 6.7 Thread gasket ...................................................................................................................................... 19 7 Marking ................................................................................................................................................ 19 8 Type testing and quality control ....................................................................................................... 19 8.1 General ................................................................................................................................................. 19 8.2 Type-test .............................................................................................................................................. 20 8.3 Sampling .............................................................................................................................................. 20 9 Mounting of hose fittings ................................................................................................................... 20 Bibliography ..................................................................................................................................................... 21

SIST EN 14422:2013

EN 14422:2013 (E) 3 Foreword This document (EN 14422:2013) has been prepared by Technical Committee CEN/TC 218 “Rubber and plastics hoses and hose assemblies”, the secretariat of which is held by BSI. 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 2013, and conflicting national standards shall be withdrawn at the latest by December 2013. 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 14422:2004. In comparison to EN 14422:2004, the following changes have been made:  The Scope has been extended and the working temperature ranges have been defined for normal and low temperature operation.  In Clause 2, the normative references have been updated.  Clause 3 "Terms and definitions" has been amended.  Clause 4 "Requirements" has been revised.  In Clause 6, all material lists have been revised.  In Clause 7, the requirements for marking have been revised.  Clause 8 regarding type testing and quality control has been restructured and amended.  The Bibliography has been reviewed.  The standard has been revised editorially.

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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 14422:2013

EN 14422:2013 (E) 4 1 Scope This European Standard specifies the dimensions, designation, materials, marking and testing requirements for a range of hose fittings which may be used with rubber/plastic hoses for the transfer of liquefied petroleum gas, LPG, in liquid or vapour phase and natural gas. The maximum working pressure is 25 bar1). For normal operation the working temperature range is from –30 °C up to 70 °C and for low temperature operation (LT) it is from –50 °C up to 70 °C. The nominal size for hose fittings with internal and external threads is from DN 15 to DN 75 and for hose fittings with flanges DN 15 to DN 200. In addition to the fittings described in this European Standard, threaded connections according to EN 14420-5 as well as hose fittings with screwed ferrules according to EN 14424 up to DN 25 for LPG could be used. 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 ISO 15614-1, Specification and qualification of welding procedures for metallic materials — Welding procedure test — Part 1: Arc and gas welding of steels and arc welding of nickel and nickel alloys

(ISO 15614-1) EN 1092-1, Flanges and their joints — Circular flanges for pipes, valves, fittings and accessories, PN designated — Part 1: Steel flanges EN 1759-1, Flanges and their joints — Circular flanges for pipes, valves, fittings and accessories, Class designated — Part 1: Steel flanges, NPS 1/2 to 24 EN 10025-2, Hot rolled products of structural steels — Part 2: Technical delivery conditions for non-alloy structural steels EN 10028-2, Flat products made of steels for pressure purposes — Part 2: Non-alloy and alloy steels with specified elevated temperature properties EN 10087, Free-cutting steels — Technical delivery conditions for semi-finished products, hot-rolled bars and rods EN 10088-1, Stainless steels — Part 1: List of stainless steels EN 10216-1, Seamless steel tubes for pressure purposes — Technical delivery conditions — Part 1: Non-alloy steel tubes with specified room temperature properties EN 10283, Corrosion resistant steel castings EN 12164, Copper and copper alloys — Rod for free machining purposes EN 12168, Copper and copper alloys — Hollow rod for free machining purposes EN 12420, Copper and copper alloys — Forgings

1) 1 bar = 0,1 MPa. SIST EN 14422:2013

EN 14422:2013 (E) 5 EN 14420-2, Hose fittings with clamp units — Part 2: Hose side parts of hose tail EN 14420-3, Hose fittings with clamp units — Part 3: Clamp units, bolted or pinned EN ISO 4042:1999, Fasteners — Electroplated coatings (ISO 4042:1999) EN ISO 8330, Rubber and plastics hoses and hose assemblies — Vocabulary (ISO 8330) ISO 2859-1, Sampling procedures for inspection by attributes — Part 1: Sampling schemes indexed by acceptance quality level (AQL) for lot-by-lot inspection 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN ISO 8330 and the following apply. 3.1 DN (nominal size) alphanumeric designation of size for components of a pipework system, which is used for reference purposes, and which comprises the letters DN followed by a dimensionless whole number which is indirectly related to the physical size, in millimetres, of the bore or outside diameter of the end connections Note 1 to entry: The number following the letters DN does not represent a measurable value and should not be used for calculation purposes except where specified in the relevant standard. Note 2 to entry: In those standards which use the DN designation system, any relationship between DN and component dimensions should be given, e.g. DN/OD or DN/ID. [SOURCE: EN ISO 6708:1995, 2.1] 3.2 liquefied petroleum gas LPG

low pressure 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

[SOURCE: EN 15202:2012, 3.1] 3.3 thread gasket flat faced gasket for threads according to EN ISO 228-1 4 Requirements 4.1 General Hose fittings shall withstand the mechanical and chemical loads and shall be impermeable and resistant to flammable liquefied petroleum gas (LPG) and natural gas. Hose fittings shall be designed such that they establish a frictional and positive-locking tight connection on the hose. Hose fittings shall be designed so that if an overstress occurs, the hose is destroyed first before being torn out from the fitting. Only ductile metallic materials shall be used. SIST EN 14422:2013

EN 14422:2013 (E) 6 Hose side fitting components shall not cause any dangerous notch or shear stresses on the hose. The clamp units shall be widened at the end in order to obtain a flexing zone and shall be approximately 10 % longer than the connection pieces. 4.2 Resistance of the fitting materials to the fluid The material of hose fittings and gaskets shall be selected regarding that the hose fittings and the gaskets used with them shall not be affected by the transferred medium. The fitting components may be surface protected, e.g. nickel-plated, zinc-plated, chrome-plated or by elastic coating.

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