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 2925-01-250-2731
NSN 6130-00-522-9532
NSN 6650-00-629-8027
NSN 6650-01-275-0945
NSN 5925-01-432-1397
NSN 6150-00-019-0974
NSN 6645-01-021-5727
NSN 6645-01-388-0391
NSN 5975-01-391-7529
NSN 6320-00-546-9249
NSN 5960-01-641-5493
NSN 5998-00-439-3652