Valve head for a gas cylinder

The valve head (3) is designed as a two-part housing. A charging plug (18) is embedded, and fixed in position, in the lower part (4). The charging plug (18) has a cylindrical length section (25), the latter being in contact with a bush (24). An annular groove is made in the inner surface (33) of the bush (24). A sealing ring (34) is embedded in the annular groove. A thin-walled guide sleeve (48) extends into the upper part (8). Said guide sleeve has oval through-passages (55). The charging plug (18) exhibits a downwardly directed connection stub (17). A sealing ring (21) is embedded on the circumference of the connection stub (17). Provided level with the connection stub (17) is a lateral connection stub (15) in which a manometer (16) is embedded. The charging plug (18) has a predetermined breaking point (40) which ruptures when a compressed-gas generator is electrically activated. The charging plug (18) can then slide through the bush (24) and the guide sleeve (48). In this arrangement, it releases the path for the gas in the gas cylinder (1) to a discharge connection stub (57) which is connection with an at-risk area. In the uppermost position, the charging plug (18) pushes an indicator pin (64) out of the valve head (3).