Replacement valves for the cal sample/zero span ports on all Series 9000 analyzers utilizing the auto-calibration option.
3-way AFE: NO2, (CO or SO2 or H2S), NO for 4-pin A Series Sensors
SKU: 810-0019-03
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3-way AFE: NO2, OX (CO or SO2 or H2S) for 4-pin A Series Sensors
SKU: 810-0019-00
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