摘要 |
In one arrangement there is provided a method of charging a fluid vessel (10). The vessel (10) comprises a rigid outer container, an expandable bladder (8) within the outer container in fluid communication with a release valve (9) of the fluid vessel (10). A cavity separates the rigid outer container and the bladder and the method comprises the steps of providing a first fluid (5a) to the cavity, for providing external pressure to the expandable bladder (8), and subsequently providing a second fluid (5) to the bladder (8) prior to use of the fluid vessel (10). |