Dual 1 psi diurinal emission control overpressure relief safety valves Triple high-flow vacuum valves ensure maximum make-up air flow with minimum vacuum restrictionDesigned and tested to prevent water from entering the fuel systemAutomatic nozzle shutoff 4-18 gpmHinged audible click cap meets EPA requirementsISO 10088 and CE compliantMeets CARB 13 CCR 2235 and ISO 13331 nozzle mating and retention standardsDesigned and tested to prevent water from entering the fuel systemCompatible with Ethanol blended fuelsFits 1-1/2" fill hose and 5/8" vent hose