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Continue to ChatBurkert 027881 - 2/2 NC, G1/2, Orifice 12mm, NBR, Reinforced Spring, Type 0263 Valve With Isolating Diaphragm https://www.process-valves.com/product/burkert-027881-2-2-nc-g1-2-orifice-12mm-nbr-reinforced-spring-type-0263-valve-with-isolating-diaphragm/