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