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Continue to ChatBurkert 135481 - 2/2 NC, Type 2031 General Purpose Diaphragm Valve, Welded Connection acc. EN ISO 1127/ISO 4200 https://www.process-valves.com/product/burkert-135481-2-2-nc-type-2031-general-purpose-diaphragm-valve-welded-connection-acc-en-iso-1127-iso-4200/