National foreword

This British Standard is the UK implementation of EN 14420‑7:2022, incorporating corrigendum October 2023. It supersedes BS EN 14420‑7:2013, which is withdrawn.

The UK participation in its preparation was entrusted to Technical Committee PRI/66, Rubber and plastics tubing, hoses and hose assemblies.

A list of organizations represented on this committee can be obtained on request to its committee manager.

Contractual and legal considerations

This publication has been prepared in good faith, however no representation, warranty, assurance or undertaking (express or implied) is or will be made, and no responsibility or liability is or will be accepted by BSI in relation to the adequacy, accuracy, completeness or reasonableness of this publication. All and any such responsibility and liability is expressly disclaimed to the full extent permitted by the law.

This publication is provided as is, and is to be used at the recipient’s own risk.

The recipient is advised to consider seeking professional guidance with respect to its use of this publication.

This publication is not intended to constitute a contract. Users are responsible for its correct application.

Compliance with a British Standard cannot confer immunity from legal obligations.

This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 September 2022.

This European Standard was approved by CEN on 24 July 2022.

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, Türkiye and United Kingdom.

European foreword

This document (EN 14420‑7:2022) 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 February 2023, and conflicting national standards shall be withdrawn at the latest by February 2023.

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 supersedes EN 14420‑7:2013.

In comparison to EN 14420‑7:2013, the following changes have been made:

In Clause 2, the Normative references have been updated;
The Scope of the document has been changed.

The EN 14420 series, Hose fittings with clamp units, consists of the following parts:

Part 1: Requirements, types of fixing and connection, designation and testing
Part 2: Hose side parts of hose tail
Part 3: Clamp units, bolted or pinned
Part 4: Flange connections
Part 5: Threaded connections
Part 6: TW tank truck couplings
Part 7: Cam locking couplings
Part 8: Symmetrical half coupling (Guillemin system)

Any feedback and questions on this document should be directed to the users’ national standards body. A complete listing of these bodies can be found on the CEN website.

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, 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, Türkiye and the United Kingdom.

Introduction

Cam locking couplings are manufactured worldwide according to the American “military specification” MIL-C-27487. This American standard fixes the coupling side in a limited way, but not the connection side. Other parts like levers, bolts, ring and gaskets are not standardized.

1 Scope

This document specifies the design, materials, dimensions and marking requirements for cam locking couplings that serve as the link between hoses and connections to transport liquids, solids and gases, except liquid gas and steam.

For all sizes of aluminium cast material couplings and for all couplings of size DN 100, the pressure range is from −0,8 bar to 10 bar in the working temperature range from −20 °C to +65 °C. All other couplings according to this document are capable of operating within the pressure range from 0,8 bar 1 to 16 bar in the working temperature range from −20 °C to +65 °C.

2 Normative references

3 Terms and definitions

4 Requirements

4.1 Construction

4.2 Temperatures

5 Survey

6 Types of connection

7 Designation

8 Dimensions

8.1 General

8.2 Coupler types

8.3 Cam arm (item No. 2)

8.4 Pin (item No. 3)

8.5 Ring (item No. 4)

8.6 Main gasket (item No. 5)

8.7 Thread gasket (item No. 6)

8.8 Adapter types

9 Materials

9.1 General

9.2 Coupler and adapter body

9.3 Cam arm (item No. 2)

9.4 Pin (item No. 3)

9.5 Ring (item No. 4)

9.6 Main gasket (item No. 5)

9.7 Thread gasket (item No. 6)

10 Marking

11 Type testing and quality control

Bibliography

BS EN 14420-7:2022

Hose fittings with clamp units - Cam locking couplings

Current

Published:

31 Oct 2023