A pressure regulator comprising a housing formed to include a bore therein, a piston moveably disposed within the bore wherein that piston comprises a first annular lip adjacent a first end, a spring disposed within said bore and comprising a first end and a second end, an adjustment cap moveably disposed in the bore, wherein the first end of the spring is in physical contact with the first annular lip and the second end of the spring is in physical contact with the adjustment cap.

A remote regulator adjustment tool that can be used to adjust an output pressure of a remote regulator. The remote regulator adjustment tool comprises a housing defining a first bore extending therethrough, an adjustor piston movably disposed within the first bore, and an adjustment knob attached to the adjustor piston.

A remote regulator adjustment tool that can be used to adjust an output pressure of a remote regulator. The remote regulator adjustment tool comprises a housing defining a first bore extending therethrough, an adjustor piston movably disposed within the first bore, and an adjustment knob attached to the adjustor piston.

A delivering tap made of plastic for a vessel for liquids, the delivering tap having a main body, at least one cover coupled to the main body, the cover having a first turret for gas entering the vessel and a second turret for liquid exiting the vessel, each turret having a turret bottom operatively threadedly coupled to its respective turret body, a first piston located inside the first turret, a second piston located inside the second turret, each piston configured to control an opening of one of the turrets simultaneously with a closing of the other turret, an insulating sealing O-ring for each turret bottom for separating passage of gas from passage of liquid, a spring disposed in each turret bottom to push the corresponding piston to a closed position, at least one tamper seal to indicate external access to the turrets, and at least one degassing key.

A vessel for liquids is described, made of plastic material, comprising: a delivering tap composed of a main body; a covering device equipped with two turrets for entering gas and exiting liquid into/from the body; two pistons operatively coupled to the turrets for controlling their opening and closing; two bottoms operatively coupled with the pistons for controlling their operation; and a tampering-preventing seal placed on the covering device in order to prevent an undesired external access to the turrets with an integrated degassing device for degassing the vessel at the end of its life favouring its correct recycling; and a neck of the vessel connected to the delivering tap and equipped with internal and external forgery-preventing means to cooperate with the tampering-preventing seal.