Vaporiser for liq. prods. - uses butane under pressure to expel vaporised liq. and can be refilled by cooling butane to zero centigrade

摘要

The vaporiser consists of a cylindrical body (1) with an internal piston (2) which slides freely. The piston with a sealing ring (3) divides the vaporiser into two sections, the top section (11)holding the liquid and the bottom section (12)holding butane gas under pressure. The top of the vaporiser has a nozzle (4) with a push button (5) attached to a screw lid (8) which can be removed to refill the vaporiser. A shoulder stop (7) limits the upward travel of the piston, To refill the vaporiser the temperature is lowered to O deg.C, when butane gas liquifies, the piston is pushed downwards and a release valve (9) providedin the bottom allows any air mixed with the gas to be expelled.