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Continue to ChatASCO NFG353A047.120/60 - G1 1/2, Orifice Size 52mm, Threaded, Aluminium Body, ATEX, NBR, Series 353 - ASCO Dust Collector Dual Pulse Valves https://www.valves-direct.com/product/asco-nfg353a047-120-60-g1-1-2-orifice-size-52mm-threaded-aluminium-body-atex-nbr-series-353-asco-dust-collector-dual-pulse-valves/