The Winfield VFD located in Carroll County, Maryland, recently had their 4-Guys 3,500-gallon refurbished. The refurbishment work was completed by 4-Guys and included a number of upgrades - one of which was the replacement of the 5-inch direct fill line with a Firemans Friend valve. The FFV is a check valve type of device that "lives" on the inside of the tank and requires no human interaction to open it. When ready to load the tanker, simply connect a supply line and the check valve will open when the line is charged. When full, the check valve will close when the supply line is shut down. By installing the FFV, the step of manually opening and closing a large valve is eliminated - thus reducing the time needed to load the tanker.