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Continue to ChatAVENTICS - 5340053000 - Pilot-operated non-return valve, Series NR02 (NON-RETURN VALVE ZZ99-G012-G012) https://www.valves-direct.com/product/aventics-5340053000-pilot-operated-non-return-valve-series-nr02-non-return-valve-zz99-g012-g012/