The flow to the shutoff valve is metered, resulting in lowering {HEAD ~ the pressure} downstream from {TAIL ~ a metering valve} 
downstream from
The flow to the shutoff valve is metered , resulting in lowering { HEAD ~ the pressure } downstream from { TAIL ~ a metering valve }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL