... valve A80 Main technical Parameter Structural compositionColumn box:4 separated electrical heating Column box, working temperature:ambient~350°C Temperature controlling ... sample into analytical column DC200, before components flowing out, switch valve 1 from OFF to ON, C6+ was flow back to ... , O2, N2, CH4, CO flow into chromatographic column 13X, switch the valve V3 from OFF to ON. Components CO2 and ...