us saws battery operated valve exerciser
US Saws â The Digital Cut. VEX400 â Battery Operated Valve Exerciser. U.S. Saws recognized a clear need for a portable, battery operated valve turning system that was powerful, easy to set up, and versatile. U.S. Saws has created the VEX400 to streamline a valve exercising program. The tool is easier to use and as powerful as some truck mounted systems.