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Continue to ChatASCO - HB16A215S - 1/8"NPT Internal Process Connection, Open Frame Construction, Series H Suffix S - Tri-Point Miniature Pressure Switches https://www.valves-direct.com/product/asco-hb16a215s-1-8npt-internal-process-connection-open-frame-construction-series-h-suffix-s-tri-point-miniature-pressure-switches/