NBN EN 14427:2004

This European Standard specifies minimum requirements for materials, design, construction, prototype testing and routine manufacturing inspections of fully wrapped composite cylinders with a water capacity from 0,5 litre up to and including 150 litres for liquefied petroleum gases (LPG) exposed to ambient temperatures, with a test pressure of 30 bar.
This standard is only applicable to cylinders which are fitted with a pressure relief valve (see 4.1.3).
NOTE 1 Cylinders made to this standard are suitable for the temperature range of -40 °C to 50 °C.
This standard is applicable to cylinders with a liner of metallic material (welded or seamless) or non-metallic material (or a mixture thereof), reinforced by fibres of glass, carbon or aramid (or a mixture thereof).
This standard is also applicable to composite cylinders without liners.
NOTE 2 This standard does not address the design, fitting and performance of removable protective sleeves. Where these are fitted, the choice of material and sleeve performance should be considered separately.