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Continue to ChatASCO - HB21A215 - 1/8"NPT Internal Process Connection, Watertight Enclosure, Series H - Tri-Point Miniature Pressure Switches https://www.valves-direct.com/product/asco-hb21a215-1-8npt-internal-process-connection-watertight-enclosure-series-h-tri-point-miniature-pressure-switches/