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Continue to ChatASCO S290A573 - 2/2 NC, DN40, Entry Under Disc, Butt Welding Connection, Series S290 - ASCO Pressure Operated Valves https://www.valves-direct.com/product/asco-s290a573-2-2-nc-dn40-entry-under-disc-butt-welding-connection-series-s290-asco-pressure-operated-valves/