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Continue to ChatBurkert 027987 - 2/2 NO, G1/2, Orifice 12mm, EPDM, Normal Spring, Type 0263 Valve With Isolating Diaphragm https://www.process-valves.com/product/burkert-027987-2-2-no-g1-2-orifice-12mm-epdm-normal-spring-type-0263-valve-with-isolating-diaphragm/