6660-15-184-9756

4820-01-288-3903 4820012883903 012883903 is 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.

4820-01-289-1654 4820012891654 012891654 COLLAR,VALVE

4820-01-289-1666 4820012891666 012891666 is an item usually metallic, threaded or unthreaded, used for securing to or positioning into a mating part. it is designed to be used in a globe, relief, regulator valve and the like as a means of controlling the flow of liquids or gases in a given system. one end may have an integral disk or be designed to accommodate a metallic or nonmetallic disk. the other end is designed for a handwheel, lever, spring, diaphragm and the like for nonpowered operation or to accommodate a gear, solenoid, air motor and the like for powered operation. the handwheel and/or disk may be furnished with the item. excludes stem, faucet; and stem, needle valve.