What is BS EN 14422 – clamp coupling for LPG hoses about?  
Vulnerable areas for gas leakage include joints and connection points. BS EN 14422 discusses the specification for coupling assemblies so that gas transfer can take place seamlessly.
BS EN 14422 is a European Standard that 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 bart1).
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 BS EN 14422, 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.
Who is BS EN 14422 - clamp coupling for LPG hoses for? 
BS EN 14422 on ‘clamp coupling for LPG hoses’ is useful for: 
- The oil and gas industry
- Suppliers and distributors of LPG gas/vessels
- Manufacturers and distributors of hose accessories
- Manufacturers and suppliers of clamp type coupling assemblies
- Product design engineers/innovation teams
- Quality control personnel
Why should you use BS EN 14422 – clamp coupling for LPG hoses?  
Hose fittings need to be able to withstand mechanical and chemical loads without getting corroded or damaged. BS EN 14422 provides you with requirements for clamp type coupling assemblies in terms of resistance to fluid, maximum working pressures and temperatures, and welding connections.
BS EN 14422 provides you with details on materials such as:
- Hose tails and union nuts
- Weld-neck collars and weld-neck flanges
- Loose flanges
- Clamp shells
- Thread gasket
In addition to sampling and type-testing, BS EN 14422 also provides you with details for marking as well as the mounting of hose fittings.
BS EN 14422 contributes toward the safety of life and property around LPG vessels and pipelines.
What’s changed since the last update?
BS EN 14422:2013 supersedes BS EN 14422:2004. BS EN 14422:2013 includes some editorial changes with respect to BS EN 14422:2004. These include:
- 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
