2018-08-122018-08-121994http://hdl.handle.net/20.500.12091/116It is assumed that hospital laboratories, theatres, and other departments that use gas cylinders will be using cylinders owned by the vendor. The problems of refilling will therefore not be considered. Cylinders are intrinsically simple devices (Fig. 2.17) requiring little or no maintenance. However, they are potentially highly dangerous because of the pressure of the contained gas. The pressure within a fully charged cylinder may be governed by local requirements, but can be as high as 20 MPa. For this reason, cylinders should be treated and maintained with care to avoid damage.en-USBottled GassesAnesthesiaAnesthesia MachineUMDNS: 45Oxygen ConcentratorsUMDNS: 12873Book chapter