Miller-Leaman: Injection-Molded Plastic Disc and Screen FiltersMiller-Leaman’s injection-molded plastic Helix HD Series (disc version) and Helix HS Series (screen version) are available in three sizes: a regular 2-inch model, 2-inch Super model, and a 3-inch model. As water enters the housing, a centrifugal action occurs, spinning heavier particles down to the base of the filter where they are flushed via a ¾-inch flush port.

Miller-Leaman Inc.