New old stock (NOS), never installed, mint condition. This is a valve pilot assembly, P/N 5311397-2, Nato stock number (NSN) 4820-21-854-0031. Manufactured by the Bailey Controls Company, Wickliffe, Ohio, U.S.A. From the assembly kit 258119A1. Part acquired from Canada National Defense, military logistics. Was found in a army protective drum, hence its perfect condition. Drum not included. 7 available upon request.

A pilot valve is a small valve that controls a limited-flow control feed to a separate piloted valve. This valve generally controls a high pressure or high flow feed. Pilot valves are often used in critical applications such as emergencies and safety controls are human-operated.