scope:

This European Standard specifies the requirements for materials, design, manufacture, testing inspection, safety systems and documentation (including instructions for first operation), for commonly-used types of gas-loaded accumulators and gas bottles for fluid power applications (see This European Standard applies to the following types of components, defined as the pressurecontaining envelope of gas-loaded accumulators: - bladder type; - diaphragm type; - piston type; - transfer type; - gas bottles used to provide additional gas capacity. They consist of one or several parts joined together by a variety of mechanical means and by welding. This European Standard applies to gas-loaded accumulators which operate with the following conditions: - subject to an internal gauge pressure greater than 0,5 bar; - working temperature of not lower than -50 °C and not higher than +200 °C; - containing Group 2 liquids and gases as defined in the Pressure Equipment Directive 97/23/EC.