We describe the design and operation of the fluid delivery, monitor an
d control systems for the SLD barrel Cherenkov Ring Imaging Detector (
CRID). The systems deliver drift gas (C2H6+TMAE), radiator gas (C5F12N2) and radiator liquid (C6F14). MeasUred critical quantities such as
electron lifetime in the drift gas and ultra-violet (UV) transparencie
s of the radiator fluids, together with the operational experience, ar
e also reported.