The throttle valve 112 is arranged in {HEAD ~ fluid series} with the fuel metering valve 110 and {TAIL ~ the centrifugal pump} 114 to regulate pressure drop across the fuel metering valve 110 
The throttle valve 112 is arranged in { HEAD ~ fluid series } with the fuel metering valve 110 and { TAIL ~ the centrifugal pump } 114 to regulate pressure drop across the fuel metering valve 110
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH