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 6645-01-535-2847
NSN 5910-01-393-3417
NSN 7035-01-412-8322
NSN 5998-01-191-2440
NSN 5950-01-483-1075
NSN 5905-00-085-8442
NSN 5930-00-342-0502
NSN 5990-01-294-6198
NSN 5985-00-781-5397
NSN 6240-01-452-1253
NSN 4140-01-271-5265
NSN 2925-01-364-7926