The Everfilt® 4" Bottom Valve Plate is manufactured exclusively for the Everfilt® 4" Backwash Valve. Engineered and proven in the toughest of elements, all while being capable of cycle counts that exceed industry competitors. Manufactured from 316SS ensures long life expectancy and confidence in Everfilt® equipment. This part is used in Everfilt® 4" Backwash Valves.