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Continue to ChatASCO - HB11A214 - 1/4"NPT External Process Connection, Watertight Enclosure, Series H - Tri-Point Miniature Pressure Switches https://www.valves-direct.com/product/asco-hb11a214-1-4npt-external-process-connection-watertight-enclosure-series-h-tri-point-miniature-pressure-switches/