A flow limit shutoff valve for automatically shutting off all flow between a source of high pressure gas and a pressure regulator when {HEAD ~ that flow} exceeds {TAIL ~ a preset flow rate} 
exceeds
A flow limit shutoff valve for automatically shutting off all flow between a source of high pressure gas and a pressure regulator when { HEAD ~ that flow } exceeds { TAIL ~ a preset flow rate }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL