SIST-TS CEN/TS 14421:2007

Hose tail and ferrule for crimping and swaging

This Technical Specification applies to hose tails and ferrules for crimping and swaging and covers the following types of attachment between hose and couplings:
-   internal swaging;
-   external swaging;
-   external crimping.
Maximum working pressure 10 bar, maximum working temperature 150 °C (depending on the respective material).

Schlauchstutzen und Presshülsen zum internen und externen Verpressen

Diese Europäische Norm gilt für Schlauchstutzen und Presshülsen zum internen und externen Verpressen und behandelt die folgenden Arten der Befestigung zwischen Schlauch und Schlaucharmaturen:
-   Internes Verpressen
-   Externes Verpressen
-   Externes Verpressen (Crimpen)
Maximaler Arbeitsdruck 10 bar, maximale Arbeitstemperatur 150° (in Abhängigkeit vom jeweiligen Werkstoff).

Douilles et manchons pour sertissage et emboutissage

Gibkocevni nastavek in puša za gubanje in zvijanje

General Information

• Status: Published
• Publication Date: 31-Mar-2007
• Withdrawal Date: 31-Mar-2007
• ICS: 23.040.70 - Hoses and hose assemblies
• Technical Committee: IPMA - Polimer materials and products
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Apr-2007
• Due Date: 01-Apr-2007
• Completion Date: 01-Apr-2007
• Directive: 89/106/EEC - Construction products
• Ref Project: CEN/TS 14421:2006 - Hose tail and ferrule for crimping and swaging

Standards Content (Sample)

SLOVENSKI STANDARD
SIST-TS CEN/TS 14421:2007
01-april-2007
Gibkocevni nastavek in puša za gubanje in zvijanje
Hose tail and ferrule for crimping and swaging
Schlauchstutzen und Presshülsen zum internen und externen Verpressen
Douilles et manchons pour sertissage et emboutissage
Ta slovenski standard je istoveten z: CEN/TS 14421:2006
ICS:
23.040.70 Gumene cevi in armature Hoses and hose assemblies
SIST-TS CEN/TS 14421:2007 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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TECHNICAL SPECIFICATION
CEN/TS 14421
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
December 2006
ICS 23.040.70

English Version
Hose tail and ferrule for crimping and swaging
Douilles et manchons pour sertissage et emboutissage Schlauchstutzen und Presshülsen zum internen und
externen Verpressen
This Technical Specification (CEN/TS) was approved by CEN on 24 September 2006 for provisional application.
The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to submit their
comments, particularly on the question whether the CEN/TS can be converted into a European Standard.
CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS available
promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS)
until the final decision about the possible conversion of the CEN/TS into an EN is reached.
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, Romania,
Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2006 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 14421:2006: E
worldwide for CEN national Members.

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CEN/TS 14421:2006 (E)
Contents Page
Foreword.3
1 Scope .4
2 Normative references .4
3 Terms and definitions .5
4 Requirements.7
5 Dimensions and designation.8
6 Swaging or crimping force .16
7 Materials .16
8 Surface finish .17
9 Welding .17
10 Marking .17
11 Testing and documentation.18
12 Information to be supplied by the purchaser .18
Bibliography .19

2

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CEN/TS 14421:2006 (E)
Foreword
This document (CEN/TS 14421:2006) 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 Technical Specification is part of a suite of standards related to the fittings of rubber and plastic hoses
and hose assemblies
EN 14420-1: Hose fittings with clamp units - Part 1: Requirements, survey, designation and testing
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 14420-4: Hose fittings with clamp units - Part 4: Flange connections
EN 14420-5: Hose fittings with clamp units - Part 5: Threaded connections
EN 14420-6: Hose fittings with clamp units - Part 6: TW tank truck couplings
EN 14420-7: Hose fittings with clamp units - Part 7: Cam locking couplings
EN 14420-8: Hose fittings with clamp units - Part 8: Symmetrical half coupling (Guillemin system)
EN 14422: Clamp type coupling assemblies for LPG transfer hoses
EN 14423: Clamp type coupling assemblies for use with steam hoses rated for pressures up to 18 bar
EN 14424: Hose fittings with screwed ferrules
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to announce this CEN Technical Specification: Austria, Belgium, Cyprus, Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden,
Switzerland and United Kingdom.
3

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CEN/TS 14421:2006 (E)
1 Scope
This Technical Specification applies to hose tails and ferrules for crimping and swaging and covers the
following types of attachment between hose and couplings:
 internal swaging;
 external swaging;
 external crimping.
Maximum working pressure 10 bar, maximum working temperature 150 °C (depending on the respective
material).
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 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
austenitic-ferritic steel grades
EN 14420-1, Hose fittings with clamp units — Part 1: Requirements, survey, designation and testing
EN ISO 1307, Rubber and plastics hoses for general-purpose industrial applications — Bore diameters and
tolerances, and tolerances on length (ISO 1307:1992)
EN ISO 8031, Rubber and plastics hoses and hoses assemblies — Determination of electrical resistance
(ISO 8031:1993)
EN ISO 8330, Rubber and plastics hoses and hose assemblies — Vocabulary (ISO 8330:1998)
EN ISO 15607, Specification and qualification of welding procedures for metallic materials — General rules
(ISO 15607:2003)
EN ISO 15609-1, Specification and qualification of welding procedures for metallic materials — Welding
procedure specification — Part 1: Arc welding (ISO 15609-1:2004)
EN ISO 15614-1:2004, 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-
1:2004)
4

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CEN/TS 14421:2006 (E)

3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
internal swage
act of expanding the hose tail to compress the hose material against the ferrule, therefore providing near
unrestricted full flow through the bore of the connection, which results in reduced turbulence of the fluid
flowing through the hose.
Internal swaging is achieved by drawing a hardened tool (commonly known as a dolly) through the tail to
expand it. The compressive force exerted on the hose by the coupling causes the hose material to flow into
the serrated cavities of both tail and ferrule thus providing a secure mechanical bond

Key
1 shape of tail after swaging
2 shape of tail before swaging
Figure 1 — Internal swage
3.2
external swage
act of compressing the hose ferrule onto the hose material in order to compress it against the hose tail.
External swaging is achieved by pushing the hose and coupling assembly through a die aperture of smaller
diameter than the external diameter of the ferrule.
Similar in principle to internal swaging, the external diameter of the ferrule is permanently reduced such that
the resulting compressive force exerted onto the hose causes it to flow into the serrated cavities of both tail
and ferrule thus providing a secure mechanical bond

5

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CEN/TS 14421:2006 (E)

Key
1 shape of ferrule after swaging
2 shape of ferrule before swaging
Figure 2 — External swage
3.3
external crimping
with external crimping the outside of the ferrule is reduced to compress the hose material against the tail by
pressure being applied on the outside of the ferrule, thereby causing the hose material to flow into the
serrated cavities between the tail and the ferrule effecting a secure mechanical bond

Key
1 shape of ferrule after crimping
2 shape of ferrule before crimping
Figure 3 — External crimping
6

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CEN/TS 14421:2006 (E)
4 Requirements
4.1 General
This Technical Specification is intended for couplings operating within the following operating conditions:
4.2 Fluid pressure
• Maximum working pressure 10 bar;
• test pressure 30 bar;
• minimum burst pressure 50 bar.
NOTE 1 MPa = 10 bar.
4.3 Temperature
Range of working temperature:
carbon steel (Cst)  − 29 °C to 100 °C;
stainless steel (Stst) − 50 °C to 150 °C.
NOTE Hose couplings can operate outside of the above operating conditions but they are not covered by this
Technical Specification.
7

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CEN/TS 14421:2006 (E)
5 Dimensions and designation
5.1 Survey
5.1.1 Internal swage tail
Table 1 — Tail fittings dimensions — Internal swage
Dimensions in millimetres
Hose tail d d d d d l l l l
1 2 3 4 5 1 2 3 4
DN/nb

0 + 0,4
± 0,25 nom min. min. max. Ref ± 0,75

− 0,5 0
 50 (2")  51  43  56 63  53 100 45 145 5
   65 (2½")  64  56  68 73  65 100 55 155 5
 80 (3")  76  68  84 88,9  78 125 60 185 5
100 (4") 102  93 109 114,3 103 150 63 213 5
125 (5") 127 118 135 141,3 128 175 67 242 5
150 (6") 152 143 162 168,3 154 200 70 270 5
200 (8") 203 192 211 219,1 204 250 73 323 5



Figure 4 — Internal swage tail
NOTE For serration detail see Figure 8.
8

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CEN/TS 14421:2006 (E)
5.1.2 External swage tail
Table 2 — Tail fittings dimensions — External swage
Dimensions in millimetres
Hose tail d d d d d l l l l
1 2 3 4 5 1 2 3 4
DN/nb

0 + 0,4
± 0,25 nom min. min. max. Ref ± 0,75

− 0,5 0
 50 (2")  51  43  56 63  66 100 45 145 5
   65 (2½")  64  56  68 73  78 100 55 155 5
 80 (3")  76  68  84 88,9  94 125 60 185 5
100 (4") 102  93 109 114,3 119 150 63 213 5
125 (5") 127 118 135 141,3 145
...