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Continue to ChatBurkert 137132 - 2/2 NC, Type 2031 General Purpose Diaphragm Valve, Flange Connection acc. DIN EN 1092-1 https://www.process-valves.com/product/burkert-137132-2-2-nc-type-2031-general-purpose-diaphragm-valve-flange-connection-acc-din-en-1092-1/