hayward 18 inch sand filter

The Hayward 18-inch sand filter uses an integral top diffuser to spread incoming water evenly across the sand bed, and a precision-engineered umbrella-fold, self-cleaning lateral system that balances flow and helps prevent sand build-up on the laterals.

Key maintenance features include a large pressure sand/water drain for fast draining during servicing or winterizing, and pump-to-filter union connections that simplify disassembly and reassembly for seasonal storage or repairs.

These listings describe the Hayward 18-inch sand filter as intended specifically for above-ground pools.

Most listings reference an 18" polymeric tank; one listing also mentions a 20" polymeric tank, so both 18" and 20" diameters appear in the results.

These filters use a 7-position multiport control valve, offering multiple settings while providing high flow with a lower pressure drop.

Weights listed across the results range from about 32 pounds up to 68 pounds.

Listings highlight pump-to-filter union connections to simplify hookup and removal, a large sand/water drain for rapid draining during servicing or winterizing, included bases and hose packages to streamline setup, and a 7-position valve plus integral top diffuser to simplify filtration control and ensure even water distribution.