Questions about Valves, Nonpowered
What does federal supply class 4820 cover?
Federal supply class 4820 covers nonpowered valves, valves operated by hand or by the fluid itself rather than by a motor or actuator. Items filed here include drain cocks, safety relief valves, and angle valves.
How is a part in federal supply class 4820 identified?
A valve is identified by its NSN and item name, and the record carries the characteristics on file and the manufacturer cross-references for it. Each item in the class has its own National Stock Number (NSN) record, listed above.