Summary Information (click on this NSN number for detailed information: 4820-00-001-9549)
Valve Seat, also referenced with federal logistics item name code 22113:
A replaceable item designed to provide a stationary seating surface for a mating, moveable item such as a valve disk or the like. the body may have a flange of various shapes. for diesel and gasoline reciprocating engines, see insert, engine valve seat.