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