Gas flask automatic filling valve - has valve shaft unaffected by excessive tightening of valve housing with twin closure elements

摘要

The gas flask valve is used for filling of storage flasks for liquid or gaseous media, especially propane, butane and their mixtures. The valve has two automatically and independently acting valve closure elements. The filling is carried out with very low pressure difference and at high flow rate. A shaft (12) connected to the upper closure element (8) is provided with continuation (18) which forms a stop (17) for the axial movement of the lower closure element (19) when the upper closure element is opened. The guide bore (11) for the shaft (12) which carries both valve closure alements has an extension (13) in the squeezing region of the tapered connection screw.