LIQUID FEEDER

PROBLEM TO BE SOLVED: To provide a liquid feeder for instantly changing over a color liquid such as a main agent being a mixing reaction and curing type material or the like to enable a short-time color change. SOLUTION: The liquid feeder is equipped with liquid tanks 10 and 20 respectively housing main agents having an A-color and a B-color as color liquids and the discharge routes L1 and L2 of the tanks 10 and 20 are connected to one feed route L3 by a three-way changeover valve 30 to selectively feed the main agents having the A- and B-colors to the feed route L3. Metering pumps 13 and 23 for quantitatively feeding the main agents in a minute flow rate are provided to the discharge routes L1 and L2 and bypass routes L1a and L2a for supplying the main agents in a large flow rate are attached through upstream changeover valves 12 and 22 and downstream changeover valves 14 and 24 so as to bypass the metering pumps 13 and 23. COPYRIGHT: (C)2003,JPO