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Continue to ChatASCO E290A468 - 2/2 NC, G1/2, Operator Diameter 50mm, NBR, Entry Under Disc, Series E290 Pressure Operated Compact Piston Valves https://www.valves-direct.com/product/asco-e290a468-2-2-nc-g1-2-operator-diameter-50mm-nbr-entry-under-disc-series-e290-pressure-operated-compact-piston-valves/