A poppet valve assembly is provided for use on a fuel tanker truck which enables the trucks driver to determine whether {TAIL ~ fuel} is flowing through the valve assembly and whether fuel is present in {HEAD ~ the valve assembly} 
A poppet valve assembly is provided for use on a fuel tanker truck which enables the trucks driver to determine whether { TAIL ~ fuel } is flowing through the valve assembly and whether fuel is present in { HEAD ~ the valve assembly }
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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD