The DBM W-25SS Asphalt Release Spray-All is a water-driven, drum-mounted, stainless steel spray applicator for applying asphalt release agents on to truck beds or tools to prevent asphalt from sticking. This venturi injection system uses city water pressure (35 - 125 PSI) to draw and blend chemical concentrate directly from the drum into the water stream. Precision metering tips are used to create an accurately diluted solution which is projected through the discharge hose and fan nozzle as a uniform spray. With a flow rate of around 1.3 GPM @ 40 PSI, this unit is great for spraying down any vehicle or equipment quickly and efficiently.