The Pipeline Products Air Vent Valve is designed to provide automatic release of air in pipe work systems during the movement of pure liquids. The need to manually bleed pipe work systems is eliminated provided the vent valve is installed at the highest point of the pipe work in the vertical position. The Air Vent Valve is fitted with a Polypropylene Ball which being lighter than the product being moved is pushed against the upper outlet of the valve once the air has been eliminated from the system thus preventing the loss of product. The Air Vent Valve may also be installed on the suction side of pumps to prevent cavitation due to air being present prior to pump start up. The Polypropylene Ball in this case will be sucked against the inlet of the valve once air has been eliminated from the suction pipe work.
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