It is a matter of course that {HEAD ~ a sufficient amount} of the brake fluid is accommodated in the second flow channels 3 and 3, the first and second connecting flow channels 31 and 32, {TAIL ~ the tank} 8 and the first flow channels 2 and 2 
It is a matter of course that { HEAD ~ a sufficient amount } of the brake fluid is accommodated in the second flow channels 3 and 3 , the first and second connecting flow channels 31 and 32 , { TAIL ~ the tank } 8 and the first flow channels 2 and 2
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH