Abstract: Apparatus for supplying liquid at a constant but regulable pressure comprising a storage vessel having an inlet and an outlet, the outlet being adapted for connection to a utilization device which is to be fed with liquid at constant pressure. An inlet conduit is connected to the inlet of the vessel and a pump is connected in the inlet conduit for pumping liquid from a liquid supply to the inlet of the vessel. A valve is inserted in the inlet conduit upstream of the pump for preventing reverse flow of liquid to the liquid supply when the pressure in the utilization device exceeds the static pressure due to the liquid height in the vessel. The valve is coupled to the pump to be opened and closed in accordance with starting and stopping thereof. The vessel includes an air inlet duct including a regulating device for adjusting the air pressure in the air chamber of the vessel from zero to a predetermined maximum.

Abstract: A valve assembly for a bottling machine composed of a mechanical unit and a pneumatic assembly mounted on a single support. The mechanical assembly includes a bottle centerer which places the neck of a bottle in a suitable position in relation to the centerer and which is displaced vertically by the bottle to act on an activating valve of the pneumatic assembly to activate a pneumatic cylinder. The piston of the cylinder moves downwards and draws with it a tubular air duct to which is attached a nozzle, which moves inside a coaxial tubular channel member defining an intermediate space for the passage of liquid. The liquid is discharged at the end of the channel member, when the nozzle is in extended position to fill the bottle whereupon the liquid blocks the nozzle and prevents the exit of compressed air from the duct at a low pressure and rate.