Abstract: A method and applicator is disclosed for producing cleaning foam. The applicator includes a housing which defines a diffusion chamber having an inlet and an outlet end. First and second inlets are peripherally located in the housing adjacent its inlet end and are in fluid communication with the diffusion chamber. These first and second inlets include flow regulators or valves for individually adjusting the rate of flow of pressurized cleaning liquid and pressurized air are continuously introduced therethrough during operation into the diffusion chamber. Upon passing through the inlets, the pressurized liquid and air flow through a diffusion means which is contained within the diffusion chamber. As the liquid and air pass through the diffusion means, the air is mixed with and entrained in the liquid and foaming occurs. Subsequently, the foam passes into a reduction chamber disposed adjacent the outlet end of the applicator.

Abstract: A safety cap assembly for pressurized vessels comprising a filler member which has an externally threaded upper portion, an internally threaded closure cap containing at least one bleed hole extending through the cap, a gasket means mounted between the filler member and the cap, a safety means extending about the cap, and at least one circumferentially located venting channel positioned on one of the threaded portions of the filler member and closure cap. As a result of the inclusion of a bleed hole and a venting channel, an open path of communication for release of vessel pressure to the atmosphere is provided when the cap is sealingly disengaged from the gasket means.