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 5935-01-423-9463
NSN 5965-01-398-9579
NSN 5990-00-415-5351
NSN 5920-01-462-2244
NSN 5920-00-324-2315
NSN 6145-01-444-4509
NSN 5930-01-519-2821
NSN 5985-00-035-4558
NSN 6110-01-007-7338
NSN 5985-01-321-3666
NSN 5855-01-586-4777
NSN 6220-00-401-8579