This is a Bedford Piston Valve for Graco GM 3500 & Ultra 333/433/1000 Sprayers. Upper Ball Seat (Outlet Seat). This quality Bedford part replaces Graco Part Number 218-036.
Bedford parts are engineered and manufactured in the USA to rigid specifications to duplicate the quality, appearance & performance characteristics of the Original Equipment Manufacturers' parts. With Bedford parts you can be assured of quality and trouble-free performance.