Description:Cat® Control Piston Assembly is an hydraulically operated control valve. Piston valves control the flow of fluid through a tube or pipe by using the linear motion of a piston within a chamber or cylinder. The valve also offers an in-built flow governing function. Cat® Parts are manufactured to precise specifications and are built for durability, reliability, productivity, less environmental impact, and reuse.Application:Cat® Control Piston Assembly are located in the portable plate assembly of the Cat hydraulic systems. Consult your owner's manual or contact your local Cat Dealer for more information.