BS EN 14420-7-2022 (2023) PDF

Full title and description

STB BS EN 14420-7:2022 (2023) — Hose fittings with clamp units — Part 7: Cam locking couplings. This document is the European (EN) standard for cam‑locking (cam-and-groove) hose couplings and has been adopted/implemented by national bodies (including a British implementation as BS EN 14420‑7:2022 and subsequent corrigenda).

Abstract

This standard specifies the design, materials, dimensional and marking requirements, and pressure/temperature capability for cam locking (cam-and-groove) couplings used as hose fittings with clamp units. It defines requirements for different materials and sizes, gives working pressure and temperature ranges, and replaces the earlier 2013 edition. The EN text was approved in 2022 and has associated corrigenda issued in 2023 (and later national corrigenda/adoptions).

General information

• Status: Published / Current (European Standard with national implementations such as BS EN).
• Publication date: EN approval: 24 July 2022 (published August 2022). UK implementation / national publication shown in 2023 (BS EN 14420‑7:2022, with corrigendum implemented Oct 2023 and further national corrigenda in 2024).
• Publisher: CEN (European Committee for Standardization) — implemented nationally by standards bodies (example: BSI Standards Limited for the British implementation).
• ICS / categories: 23.040.70 (Hoses and hose fittings / Flanges, couplings and joints).
• Edition / version: EN 14420-7:2022 (replaces EN 14420-7:2013); national implementations (e.g. BS EN 14420‑7:2022) incorporating corrigenda (Oct 2023 and later).
• Number of pages: Typical national publication listings show 33–34 pages for the implemented text (national PDFs/electronic publications commonly listed as 33–34 pages).

Scope

Specifies the design, materials, dimensions and marking requirements for cam locking couplings (cam-and-groove type) used to link hoses and connections for transfer of liquids, solids and gases, excluding liquefied gas and steam. The standard gives working pressure and temperature ranges: for aluminium cast couplings and for couplings of size DN 100 the working pressure range is from −0.8 bar to 10 bar (working temperature −20 °C to +65 °C); other couplings covered by the document are capable of operating from 0.8 bar up to 16 bar in the same temperature range. The document replaces the 2013 edition and is part of the EN 14420 series covering hose fittings with clamp units.

Key topics and requirements

• Definition and designation of cam locking (cam-and-groove) couplings and related half‑coupling types.
• Dimensional requirements for coupling bodies, cams/levers, grooves and mating parts (to ensure interchangeability where specified).
• Material specifications and designation (typical materials: aluminium, stainless steel, brass, polypropylene) and limits on use per material and size.
• Working pressure and temperature ranges by material and size (including special limits for aluminium cast couplings and DN 100).
• Marking and traceability requirements (manufacturer, size, material/grade, pressure rating or identifying marks).
• Gasket/seal types and recommendations for sealing materials suited to media and temperature ranges.
• Reference to recommended clamps and hose tail preparations (alignment with other parts of EN 14420 series for clamp units and hose tails).
• Notes on interchangeability with non‑EN specifications (the standard references common practice such as MIL‑C‑27487 historically used for camlock couplings).

Typical use and users

Manufacturers of hose couplings and hose assemblies, process and chemical plants, tank‑truck equipment suppliers, bulk liquid handling operators, marine and transport industries, agricultural and construction equipment manufacturers, distributors of camlock couplings, and testing/inspection bodies use this standard to ensure safe, interoperable hose connections and to specify procurement and quality requirements for cam locking couplings.

Related standards

EN 14420 is a multi‑part series for hose fittings with clamp units. Related parts include EN 14420‑1 (general), Part 2 (hose side parts/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 — this document), and Part 8 (symmetrical half coupling / Guillemin system). National implementations and corrigenda (EN 14420‑7:2022/AC:2023 and subsequent national corrigenda) should be consulted for amendments.

Keywords

cam locking coupling; cam-and-groove; camlock; hose fittings; clamp units; hose assemblies; couplings; EN 14420-7; BS EN 14420-7; working pressure; gasket; DN 100.

FAQ

Q: What is this standard?

A: EN 14420-7:2022 (implemented nationally as BS EN 14420‑7:2022 in the UK) is the European standard that specifies requirements for cam locking (cam-and-groove) hose couplings used with clamp units.

Q: What does it cover?

A: It covers design, materials, dimensions, marking and rated working pressure/temperature ranges for camlocking couplings (excluding liquefied gas and steam). The standard sets limits by material and size (e.g., aluminium cast couplings and DN 100 have a specified pressure range to 10 bar; other sizes/materials up to 16 bar in the stated temperature range).

Q: Who typically uses it?

A: Manufacturers and suppliers of camlock couplings and hose assemblies, procurement/specification engineers, operators in bulk liquid handling (tankers, terminals), chemical/process plants, and conformity/test laboratories.

Q: Is it current or superseded?

A: EN 14420‑7:2013 was superseded by EN 14420‑7:2022. The 2022 edition has had corrigenda issued (EN 14420‑7:2022/AC:2023 and national corrigenda/implementations thereafter) — users should reference the implemented national text and corrigenda for the authoritative, current requirements.

Q: Is it part of a series?

A: Yes — it is Part 7 of the EN 14420 series (Hose fittings with clamp units). Other parts cover hose tails, clamp units, flanges, threaded connections, tank truck couplings, and the Guillemin system.

Q: What are the key keywords?

A: Cam locking coupling, cam-and-groove, camlock, hose fittings, clamp units, EN 14420-7, BS EN 14420‑7, working pressure, gasket, DN 100.