Moen’s M•Dura flush valves feature a heavy-duty construction and proprietary design. The Accuset piston technology requires virtually no maintenance or replacement parts for the life of the flush valve. Accuset is a self-cleaning filter which protects the piston seals against clogs and damage from line debris, allowing it to fully function even if the filter is up to 90% clogged. It’s ideal for all commercial applications, regardless of water pressure variances, as Accuset can operate with pressure as low as 15 lb. per sq.- in.