I use a Festo Valve with a short length of tygon tubing in the filling end. Just plug the Jersey Fueler probe into the tube, open the valve, start the pump and fuel it up. When you're done, shut the pump off, close the fueling valve, put a paper towel around the end with the fuel probe stuck in it and remove the probe. The paper towel will absorb the few drops of fuel that are on the end of the valve away from the UAT. Works Great!