Kinney is most noted for our heavy-duty Model A and Model AP Automatic Self-Cleaning Strainers . Both models are designed for continuous removal of suspended particles from all types of liquids. The Model A is designed for operation under positive pressure (20 psi or greater). Pipeline sizes range from 2" - 60" and larger. Both models employ the use of a rotating cylindrical drum with a number of threaded holes containing one of many types of straining media. The drum is supported on a rotating shaft fitted with bearings and is contained in a body having a vertical backwash slot opening adjacent to the drum surface.