| 摘要 |
A fluid flow coupling providing a mounting and a valve operating means for pressure vessels for compressed gases comprises a tubular body (18) having a socket in which the neck of a gas bottle (1) can be locked by balls (44) carried in a sleeve (36) which can be moved axially by a cam (16) which extends across the bore of the body and is rotatable by a handle. The cam also moves one part (35) of a valve actuating member the other part (56) of which extends into the neck of the gas bottle to open the valve (65, 66) therein. The handle has three positions. In the first the balls are retracted to allow removal of the bottle. In the second the bottle is locked in position with its valve closed and a flow path exists from the outlet port to the atmosphere. In the third the valve in the bottle is open and a flow path exists from the bottle to the outlet port. <IMAGE> |
