Abstract: A valve assembly for a container for pressurized fluid in which a cup (10) mounts the assembly to a container body, and a valve (14) including a valve housing (12) fitted in the cup, the valve housing is located within the cup by the engagement of internal projections (16) in the cup behind a head (18) of the housing. The cup, the valve housing (12) and the valve (14) are arranged in one condition of the valve assembly to allow fluid to be passed into the cup and between an exterior wall of the housing and the side wall of the cup for filling the container. The exterior wall of the housing is provided with a multiplicity of narrow grooves (26) which define flow paths (62) for the passage of such fluid and these grooves are narrow in relation to the width of the internal projections, so that they do not impair the locating function of the projections.

Abstract: A valve for an aerosol container, of the kind which is adapted to pass propellant into the container to pressurize the aerosol product, has a dip tube which is arranged to act as a diffuser. The propellant is thereby caused to enter the product as a large number of small bubbles rather than a much smaller number of larger bubbles. By thus improving the rate of solution of the propellant in the product the propellant charging times can be substantially reduced.