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MembraneBrass membranes for UNB-600 pump safety valves. Membranes are made of cold-rolled sheet brass L63 in compliance with GOST 931-78 (with temporary tear resistance not less than 30 kgs/mm2) according to drawing No. 4066.53.271. Membrane diameter 97 mm, thickness 0.50 mm, weight 0.032 kg/pcs.
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