Siphons supplying carbonated water (soda) use dispenser valve heads which, normally, comprise a valve body crossed by a circulation channel. This channel, at one end, ends in a dispenser outer spout, while at the other ends into a dip tube located inside the bottle.
In general, the valve body is formed by the head walls, therefore this kind of head has a large volume and require a large mass of material for its manufacture.
Further, in order to allow dispensing of the liquid contained into the bottle, a check valve is included into this circulation channel, which is actuated by means of a rigid lever projecting outwardly from the valve head. Therefore, this kind of rigid lever is the means used typically by conventional valve heads.
On the other hand, by means of the improvements of the instant invention, a head is obtained the valve body of which is covered by a covering hood having a diametrical slot, constituting an operating channel for command thereof. The latter, being intended to hold a check valve, has its fulcrum in said covering hood and comprises an articulated arm which is foldable over the covering hood, wherein folding stops and a folding straps are located for retaining the end of the arm which partially closes said diametrical slot.
This constitution of the head affords a better operation and requires a smaller mass of constituting material, which makes the head lighter and less expensive. In fact, the valve body does not act as a support for the command means, therefore, the latter is reduced to its minimum possible expression. This simplification of the valve body is compensated by the presence of a covering hood protecting it from shocks and dirt.
Further, the instant covering hood is designed for serving as mounting means for a command means the articulated arm of which is foldable on said hood, where it has folding stops and a strap retaining its end. The inclusion of a diametrical slot allows fixing the strap and unfolding the articulated arm.
The smaller base of the hood and the cited stops prevent the folding articulated arm from being pressed in by any accidental pressure, in which case the valve stem would be displaced and an undesirable delivery of liquid would take place. Therefore, frequent shocks and pressures produced during storage and loading and unloading of trucks may not actuate the command means which is folded inside the diametrical slot and also properly strapped.
The perfect compatibility between the forming elements is demonstrated by the engagement between the valve body and the covering hood, since they not only have connecting means therebetween, but, further, the hood has a side mouth. This mouth, originated at the edge of the open larger base, allows the passage of the outer spout through which the carbonated liquid is delivered.