Description Manuals Videos Articles Clemco #25572 Clemco CMS-4 Calibartion connector with 0.5 LPM Fixed-Flow side valve. This connector attaches to the top of the test gas bottle. Related Parts (1) Parts Included (1) CMS-4 CO Monitor Package #29765 $933.43 1136 Customers Also Viewed CMS-4 CO Monitor Package #29765 $933.43 CMS-4 Calibration Kit #29767 $259.56 CMS-4 Calibration cup #29764 $76.61