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Continue to ChatBurkert 783290 - DN40, G1 1/2, 20.2 Flow Rate KV, Brass, Light Design, Type TFU002 Check Valve For Water and Air https://www.process-valves.com/product/burkert-783290-dn40-g1-1-2-20-2-flow-rate-kv-brass-light-design-type-tfu002-check-valve-for-water-and-air/