{TAIL ~ The microvalve} includes {HEAD ~ a flap} that is flexed by pressure exerted on the flap by the vapor on the fluid in the channel to prevent the fluid from flowing into portions of the channel 
{ TAIL ~ The microvalve } includes { HEAD ~ a flap } that is flexed by pressure exerted on the flap by the vapor on the fluid in the channel to prevent the fluid from flowing into portions of the channel
TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH