Thus, when the valve is closed, current flows from electrode 140 to {HEAD ~ electrode} 142 through {TAIL ~ strip} 145 
Thus , when the valve is closed , current flows from electrode 140 to { HEAD ~ electrode } 142 through { TAIL ~ strip } 145
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH TAIL TAIL TAIL TAIL TAIL OTH