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