Abstract: Improvements in valve heads for soft drink bottles and the like, of the kind which may be coupled to the neck of a bottle containing carbonated liquid, including a valve body crossed by a liquid circulation channel communicating an outer spout with the inner outlet of a dip tube which ends inside the bottle; a check valve which, mounted in the circulation channel, has a normally closed valve blocker the stem of which has a sliding guide in the upper portion of the valve body; the improvements comprising a covering hood having substantially a frustoconical shape, a command element constituting a second genus lever, a removable band constituting a folding strap for the foldable articulated arm, a mouth constituting a passage for the outer spout, and connecting element between the hood and the valve body.

Abstract: Improvements in service valve heads which may be connected to soft drink bottles or the like, wherein a valve body is obtained, a liquid circulation channel being provided between the spout and the fishing tube, said channel having a check valve. The rod of said valve is actuated by a command means whose the articulated arm is foldable over the valve body, having folding stops and having a strap provided with a retainer. Folding stops of the valve body and corresponding recesses of the articulated arm prevent that the latter being lowered by any accidental pressure, in which case the valve rod would be displaced and an unwanted release of liquid would be produced. For delivering the carbonated liquid it is first necessary to release the folding strap. In this way the articulated arm may be unfolded until it displaces through the command channel existing on the head walls.