GB887833A - Device for establishing and controlling the flow of a fluid under pressure from a container therefor - Google Patents

Abstract

887,833. Valves. BRITISH OXYGEN CO. Ltd. Sept. 30, 1959 [Oct. 27, 1958], No. 34402/58. Class 135. A valve device for establishing and controlling the flow of a fluid under pressure from a normally sealed container 4, e.g. of liquefied fuel gas such as butane for use in stoves or lamps, comprises a tubulous piercing member 21 closed at one extremity the other extremity being adapted to communicate with fluid utilizing apparatus and having an aperture 23 extending from the bore to the exterior thereof, the piercing member being adapted at its closed extremity to pierce a plug 7 of resilient material provided on and normally sealing the container, so as to establish communication between the interior of the container and the bore of the piercing member through the aperture 23, the plug being adapted, when pierced, to maintain sealing contact with the wall of the piercing member, and means for subsequently adjusting the extent of penetration of the piercing member to control the flow. The tube 21 is carried in a bore 20 of a spring-loaded plunger 9 slidable in a body part 1 secured to a neck of the container, the bore 20 communicating with an annular recess 25 on the exterior of a stem of the plunger which has a screw-thread 26. This thread and recess 25 are covered by a tightly-fitting sleeve 27 of resilient material so that the fluid is forced to traverse the thread 26 which acts as a flow restriction. A circlip 16 locates the plunger during assembly of the body 1 to the container so that the plug 7 is pierced without flow commencing. A second body part 30 having an outlet 34 is then screwed on so as to abut the threaded end of the plunger stem and to adjust the device to a flow position.