Solids-handling pumps (up to 3-inch solids) from Zoeller Company feature two-vane or vortex impeller styles. Grinder pumps, available in progressing cavity or centrifugal designs, have a star cutter with shearing action that keeps surfaces clean and ensures clog-free pumping. Finned castings, oil-filled housings and non-overloading designs limit internal temperature rise in harsh conditions.
800/928-7867; www.zoellerengprod.com.