Air & Vacuum Release Valves - AA Series |
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The Chemline AA Series Air and Vacuum Release Valve provides a controlled venting solution for larger diameter piping systems. This valve reduces the potential for water hammer incidents that occur when pressure builds up due to entrapped air. A unique two-stage ball stop prevents liquids from escaping while allowing high volume air release while the pipeline is under pressure, also at low pressure when it is being filled. The vacuum release function allows air to re-enter the pipeline to prevent vacuum collapse. PDCPD (Polydicyclopenthadiene) is a polyolefin thermoset plastic. Valve parts are manufactured by a process called reaction injection moulding (RIM). PDCPD has excellent corrosion resistance and temperature ratings, very similar to those of polypropylene. It is durable material offering very high impact strength and a fraction of the weight of cast iron.
Light Weight
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Valve with
removeable cover
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