comprises a poppet valve assembly for use on {TAIL ~ a fuel tanker truck} for loading fuel onto {HEAD ~ the truck} or unloading fuel from the truck, most commonly into an underground storage tank at a service station 
comprises a poppet valve assembly for use on { TAIL ~ a fuel tanker truck } for loading fuel onto { HEAD ~ the truck } or unloading fuel from the truck , most commonly into an underground storage tank at a service station
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH 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