Abstract: A valve assembly (100, 500) for a pressurised or pressurisable container of an aerosol spray device is disclosed, wherein a valve stem (120) of the valve assembly (100, 500) is moveable between: a closed position in which a first sealing means (144) is biased against a second sealing means (148, 548) by a biasing means (146) such that a housing inlet (112) is not in fluid communication with an at least one valve stem inlet (178, 184); and an open position in which the first sealing means (144) is displaced from the second sealing means (148, 548) by a proximal end (174) of the valve stem (120) such that the housing inlet (112) is in fluid communication with the at least one valve stem inlet (178, 184), wherein, in the open position, a flow path is created from the housing inlet (112), around the outside of the first sealing means (144), and to the at least one valve stem inlet (178, 184).

Abstract: A valve assembly (100, 500) for a pressurised or pressurisable container of an aerosol spray device is disclosed, wherein a valve stem (120) of the valve assembly (100, 500) is moveable between: a closed position in which a first sealing means (144) is biased against a second sealing means (148, 548) by a biasing means (146) such that a housing inlet (112) is not in fluid communication with an at least one valve stem inlet (178, 184); and an open position in which the first sealing means (144) is displaced from the second sealing means (148, 548) by a proximal end (174) of the valve stem (120) such that the housing inlet (112) is in fluid communication with the at least one valve stem inlet (178, 184), wherein, in the open position, a flow path is created from the housing inlet (112), around the outside of the first sealing means (144), and to the at least one valve stem inlet (178, 184).

Abstract: A valve assembly including a housing with an internally projecting lip that seals against an outer surface of a valve stem inserted through it. A gas inlet is provided above the lip and a liquid inlet is provided below the lip. The lip thus ensures that a gas flow path and a liquid flow path are kept separate until the valve stem is moved to an open position, at which point a liquid inlet hole in the stem is brought into communication with the liquid inlet in the housing and a gas inlet hole in the stem is brought into communication with the gas inlet in the housing for the fluids mix in an outlet conduit in the stem. The arrangement means that there is no contact between the liquid and a sealing gasket, thereby avoiding swelling of the gasket that can cause the stem to stick.

Abstract: A valve assembly including a housing with an internally projecting lip that seals against an outer surface of a valve stem inserted through it. A gas inlet is provided above the lip and a liquid inlet is provided below the lip. The lip thus ensures that a gas flow path and a liquid flow path are kept separate until the valve stem is moved to an open position, at which point a liquid inlet hole in the stem is brought into communication with the liquid inlet in the housing and a gas inlet hole in the stem is brought into communication with the gas inlet in the housing for the fluids mix in an outlet conduit in the stem. The arrangement means that there is no contact between the liquid and a sealing gasket, thereby avoiding swelling of the gasket that can cause the stem to stick.