Designed inside and out for reliable performance day after day, each YELLOW JACKET pump is thoroughly “run in” and tested to insure that it exceeds quality specifications. Features an internal intake check valve that prevents oil back-up into the system during a power failure; rugged metal construction for long-lasting durability; a large oil reservoir that helps reduce operating temperature and dilute corrosive contaminants; a gas ballast valve to keep oil cleaner; and a heavyduty, high torque 1/2 hp, 1725 rpm motor to assure cold weather starting. For more information, call 800/769-8370 or visit www.yellowjacket.com/cb.