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Continue to ChatASCO S353A730GD - 2/2 NC, ATEX, Orifice Size 40mm, Quick Mount On Inlet & Outlet, NBR, Series 353 - ASCO Dust Collector Remote Pilot https://www.valves-direct.com/product/asco-s353a730gd-2-2-nc-atex-orifice-size-40mm-quick-mount-on-inlet-outlet-nbr-series-353-asco-dust-collector-remote-pilot/