A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.
NSN 5910-01-374-4502
NSN 5990-01-516-9665
NSN 5975-01-347-0481
NSN 6650-00-670-2516
NSN 5925-01-124-2441
NSN 6685-01-014-0712
NSN 5855-01-152-8782
NSN 2925-00-323-7394
NSN 5835-01-041-0873
NSN 5996-01-033-4061
NSN 6685-01-451-3937
NSN 5855-00-688-9954