SIST EN 14422:2005
(Main)Clamp type coupling assemblies for LPG transfer hoses
Clamp type coupling assemblies for LPG transfer hoses
This document details a range of hose fittings which may be used with rubber/plastic hoses for the transfer of liquid natural gas LPG (liquid or vapour phase) and natural gas.
The maximum working pressure is 25 bar and the maximum working temperature is 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.
Schlaucharmaturen mit Klemmfassung für Schläuche zur Übergabe von Flüssiggas
Diese Europäische Norm legt eine Reihe von Schlaucharmaturen fest, die mit Schläuchen aus Gummi/ Kunst-
stoff für den Transport von Flüssiggas LPG (flüssig oder gasförmig) und Erdgas verwendet werden können.
Der maximale Arbeitsdruck beträgt 25 bar, die maximale Arbeitstemperatur beträgt 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.
Raccords avec collier de serrage pour flexibles de transvasement de GPL
Cevne armature z objemkami za pretočne cevi za utekočinjeni naftni plin (LPG)
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Schlaucharmaturen mit Klemmfassung für Schläuche zur Übergabe von FlüssiggasRaccords avec collier de serrage pour flexibles de transvasement de GPLClamp type coupling assemblies for LPG transfer hoses83.140.30Cevi, fitingi in ventili iz polimernih materialovPlastics pipes, fittings and valvesICS:Ta slovenski standard je istoveten z:EN 14422:2004SIST EN 14422:2005en01-marec-2005SIST EN 14422:2005SLOVENSKI
STANDARD
SIST EN 14422:2005
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14422November 2004ICS 23.040.70English versionClamp type coupling assemblies for LPG transfer hosesRaccords avec collier de serrage pour flexibles detransvasement de GPLSchlaucharmaturen mit Klemmfassung für Schläuche zurÜbergabe von FlüssiggasThis European Standard was approved by CEN on 30 September 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 14422:2004: ESIST EN 14422:2005
EN 14422:2004 (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.5 4.3 Maximum working pressures and temperatures.5 4.4 Welding connections.5 5 Dimensions and designation.6 5.1 Survey.6 5.2 Designation system.17 6 Materials.18 6.1 Hose tails and union nuts.18 6.2 Weld-neck collars and weld-neck flanges.18 6.1 Loose flanges.18 6.2 Clamp shells.19 6.3 Surface finish.19 6.4 Gasket.19 7 Marking.19 8 Type approval testing and quality control.20 9 Mounting of hose fittings.20 Bibliography.21
SIST EN 14422:2005
EN 14422:2004 (E) 3 Foreword This document (EN 14422:2004) 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 May 2005, and conflicting national standards shall be withdrawn at the latest by May 2005. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: 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.
SIST EN 14422:2005
EN 14422:2004 (E) 4 1 Scope This document details a range of hose fittings which may be used with rubber/plastic hoses for the transfer of liquid natural gas LPG (liquid or vapour phase) and natural gas. The maximum working pressure is 25
bar and the maximum working temperature is 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. 2 Normative references The following referenced documents are indispensable for the application 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 288-3, Specification and approval of welding procedures for metallic materials — Part 3: Welding procedure tests for the arc welding of steels EN 586-2, Aluminium and aluminium alloys — Forgings — Part 2: Mechanical properties and additional property requirements EN 1092-1, Flanges and their joints — Circular flanges for pipes, valves, fittings and accessories, PN designated — Part 1: Steel flanges EN 1706, Aluminium and aluminium alloys — Castings — Chemical composition and mechanical properties prEN 1759-1, Flanges and their joints — Circular flanges for pipes, valves, fittings and accessories, Class designated — Part 1: Steel flanges, NPS ½ to 24 EN 1982, Copper and copper alloys — Ingots and castings EN ISO 6708, Pipework components - Definition and selection of DN (nominal size) (ISO 6708:1995) EN 10025, Hot rolled products of non-alloy structural steels — Technical delivery conditions EN 10028-2, Flat products made of steel for pressure purposes — Part 2: Non-alloy and alloy steels with specified elevated temperature properties EN 10088-1, Stainless steels — Part 1: List of stainless steels EN 10204, Metallic products —Types of inspection documents EN 10213-4, Technical delivery conditions for steel castings for pressure purposes — Part 4: Austenitic and austentic-ferritic steel grades EN 10283, Corrosion resistant steel castings EN 12420, Copper and copper alloys — Forgings 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, Fasteners — Electroplated coatings (ISO 4042:1999) ISO 2859-1:1989, Sampling procedures for inspection by attributes — Part 1: Sampling schemes indexed by acceptance quality level (AQL) for lot-by-lot inspection SIST EN 14422:2005
EN 14422:2004 (E) 5 3 Terms and definitions For the purposes of this document, the following term and definition applies. 3.1 DN see EN ISO 6708 4 Requirements 4.1 General Hose fittings shall withstand the mechanical and chemical loads to be expected and shall be impermeable and resistant to flammable liquid natural gas. Hose fittings shall be designed such that they comply with the requirements of this document when attached correctly and establish a frictional and positive-locking tight connection on the hose. Hose fittings shall be designed such that when using suitable hoses the hose is destroyed first before being torn out from the fitting, if a possible overstress occurs. Only ductile metallic materials shall be used. 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 appropriate connection pieces. 4.2 Resistance of the fitting materials to the fluid When selecting the material for hose fittings as well as for the gaskets used with them it shall be ensured that they will not be affected by the medium in a hazardous manner. The fitting components may be surface protected, e.g. nickel-plated, zinc-plated, chrome-plated or by elastic coating. Details are to be agreed between purchaser and manufacturer. 4.3 Maximum working pressures and temperatures Maximum working pressures and temperatures are limited by the hoses and gaskets used. All hose fittings are applicable in the pressure range from at least − 0,8 bar up to 25 bar. Unless otherwise specified, a working temperature range of − 30 °C up to 70 °C or − 50 °C up to 70 °C shall apply. 4.4 Welding connections The manufacturer shall have a welding procedure qualification for the welding procedure specification selected according to EN 288-3 (for steel). Full penetration welds are required, in case of lack of fusion they shall be welded from the opposite side without open gaps. Welding connections shall be non destructively tested in accordance with relevant documents. Further details on the welding connection are to be agreed if required. The weld-end preparation depends on the welding procedure and shall be agreed upon at the order. SIST EN 14422:2005
EN 14422:2004 (E) 6 5 Dimensions and designation 5.1 Survey The Figures 1 to 9 are diagrammatic only. Details not specified shall be chosen suitably by the manufacturer. Dimensions in millimetres
Key a Clamp unit shall be according to EN 14420-3 b Male part hose fitting c Female part hose fitting with collar for union nut d Female part hose fitting with internal thread e Union nut Figure 1 — Hose fittings with internal and external thread SIST EN 14422:2005
EN 14422:2004 (E) 7 Table 1 — Dimensions for hose fitting with internal and external thread Dimensions in millimetres d d1111 l l1 DN hose inside diameter Connecting threadconnecting thread≈≈≈≈ ≈≈≈≈ ½"NPT ½"NPT 73 74 15 13 1¾"ACME — 77 — ¾"NPT ¾"NPT 76 75 1"NPT 1"NPT 79 79 20 19 1¾"ACME — 77 — 1"NPT 1"NPT 79 25 25 1¾"ACME 1¼"NPT 77 1"NPT 1"NPT 1¼"NPT 1¼"NPT 79 79 1¾"ACME 1½"
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