A family of 3 Eco-Valves has been developed to use compressed inert gases as the propellant for a wide range of consumer aerosols.
The Range of 3 Eco-Valves:
The ‘SSG Valve’, the ‘Low Loss Valve’ and the ‘Metered Valve’ cover most commonly-used aerosols (deodorant, hairspray, polish, cleaners, insecticides and many more).
Current LPG propellants release tremendous energy when they flash-vaporise on leaving the pressurised packaging, which means that fine atomization of the product is easy and gives a near constant product flow rate. By contrast, other safe compressed gas propellants, e.g. air or nitrogen, provide relatively little atomization energy when used with conventional valves and the power available reduces as the can empties. This tends to result in a dramatic drop off in spray performance in terms of reduced flow rate and increased particle size as the can empties.
The UOS Spray Research Group project was designed to develop a system which would enable an aerosol to be propelled by inert gases but to offer spray performance similar to LPG propelled products and to overcome the problems of drop off in spray performance.