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 2925-01-560-4123
NSN 5960-01-419-1452
NSN 5905-01-212-7993
NSN 6110-01-393-7645
NSN 5996-01-007-0693
NSN 5930-01-020-8068
NSN 5925-01-569-0391
NSN 5985-01-202-3948
NSN 6150-01-105-0200
NSN 6110-01-323-8337
NSN 6220-01-357-3672
NSN 5999-00-681-6436