A valve for an aerosol container comprising: a valve housing having an outer surface for supportive engagement with a mounting cup and the valve housing defining a cavity therein for receiving valve components, the valve housing comprising; an upper portion for engaging the mounting cup of the aerosol container, a spring cavity containing a spring, and a lower sealing edge defining an opening into a lower portion of the valve housing; an inner gasket located between the upper portion of the valve housing and the mounting cup; a valve stem being located within the valve housing, the valve stem having a stop, the spring abutting with a lower end against a circumferential edge of the valve housing and engaging with an upper end with the stop of the valve stem to bias the valve stem axially upward and into a normally closed position so that a pressurized product to be dispensed cannot communicate with the environment through the valve, wherein a top surface of the stop abuts against the inner gasket when the valve stem is biased into its normally closed position; the spring cavity has a constant inner diameter which extends from the circumferential edge to the upper portion of the valve housing which engages with the mounting cup; the valve stem defining a central passage for dispensing the pressurized product, the central passage extending from at least one radial bore to a dispensing orifice at an upper end of the valve stem; the at least one radial bore is located at the lower end of the valve stem, adjacent an end sealing portion of the valve stem, and the at least one radial bore is located immediately axially adjacent a lower sealing ring and the end sealing portion; when the valve stem is biased into its normally closed position the lower sealing ring abuts against the sealing edge to close the valve and prevent a flow of pressurized product while the valve is in a closed state; and when the valve stem is depressed into the open state, the valve stem moves relative to the valve housing, against the spring bias, to move the lower sealing ring off the sealing edge and exposes the at least one radial bore directly to the pressurized product to allow instant flow of the pressurized product through the valve stem, characterized in that the end sealing portion of the valve stem extends out of the valve housing in the open state and in the closed state of the valve stem, and in that the end sealing portion has a circumferential channel that receives the lower sealing ring. a valve housing having an outer surface for supportive engagement with a mounting cup and the valve housing defining a cavity therein for receiving valve components, the valve housing comprising; an upper portion for engaging the mounting cup of the aerosol container, a spring cavity containing a spring, and a lower sealing edge defining an opening into a lower portion of the valve housing; an inner gasket located between the upper portion of the valve housing and the mounting cup; a valve stem being located within the valve housing, the valve stem having a stop, the spring abutting with a lower end against a circumferential edge of the valve housing and engaging with an upper end with the stop of the valve stem to bias the valve stem axially upward and into a normally closed position so that a pressurized product to be dispensed cannot communicate with the environment through the valve, wherein a top surface of the stop abuts against the inner gasket when the valve stem is biased into its normally closed position; the spring cavity has a constant inner diameter which extends from the circumferential edge to the upper portion of the valve housing which engages with the mounting cup; the valve stem defining a central passage for dispensing the pressurized product, the central passage extending from at least one radial bore to a dispensing orifice at an upper end of the valve stem; the at least one radial bore is located at the lower end of the valve stem, adjacent an end sealing portion of the valve stem, and the at least one radial bore is located immediately axially adjacent a lower sealing ring and the end sealing portion; when the valve stem is biased into its normally closed position the lower sealing ring abuts against the sealing edge to close the valve and prevent a flow of pressurized product while the valve is in a closed state; and when the valve stem is depressed into the open state, the valve stem moves relative to the valve housing, against the spring bias, to move the lower sealing ring off the sealing edge and exposes the at least one radial bore directly to the pressurized product to allow instant flow of the pressurized product through the valve stem, characterized in that the end sealing portion of the valve stem extends out of the valve housing in the open state and in the closed state of the valve stem, and in that the end sealing portion has a circumferential channel that receives the lower sealing ring.