A device for cooling a brake fluid according to a seventeenth aspect of the invention is that of the twelfth aspect of {TAIL ~ the invention} characterized in that the closing valve unit 34 is divided into a closing valve for closing an inlet 33a side of {HEAD ~ the pump} 33 and a closing valve for closing an outlet 33b side of the pump 33 
A device for cooling a brake fluid according to a seventeenth aspect of the invention is that of the twelfth aspect of { TAIL ~ the invention } characterized in that the closing valve unit 34 is divided into a closing valve for closing an inlet 33a side of { HEAD ~ the pump } 33 and a closing valve for closing an outlet 33b side of the pump 33
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