To overcome the frustrating problem of continued spraying after the boom has been switched off, you might want to consider using TeeJet Technologies’ Flow Back valves. Sprayers with standard valves trap pressure in the boom when they are switched off. As a result, the boom continues spraying for several seconds before completely shutting off. Reduce that shut off time by installing Flow Back valves, which are compatible with all levels of sprayer control systems and require no special wiring or plumbing. The compact, electrically-actuated Flow Back valves are available in three product platforms – 430 FB, 450 FB, and 460 FB – each of which is rated for different pressures and flows.  . .