Abstract: A poppet valve assembly is provided for use on a fuel tanker truck which enables the truck's driver to determine whether fuel is flowing through the valve assembly and whether fuel is present in the valve assembly. When a threshold flow rate through the valve assembly is reached, fluid flows inside a flow channel. The flow channel has a fluid indicator and a flow indicator therein mounted in a sight glass. When fluid is flowing in the flow channel both indicators rise. When fluid is present but not flowing in the flow channel only the fluid indicator rises. The fluid and flow indicators, being different colors, may be easily seen at a distance.