Breakaway valves help prevent hazardous fuel spills and costly damage that can occur when a vehicle drives away with the nozzle still in the fill-pipe. The Catlow Magnetic Cam-Twist is the only breakaway that allows inspection of breakaway without removing the breakaway from service, thus, eliminating the "Remove By" date.  Also, the Cam-Twist can be re-installed by aligning and letting the magnets pull it back together. You can also just purchase the lower half in case of a drive off.