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 6110-00-269-2696
NSN 5835-01-240-5022
NSN 5855-01-258-5161
NSN 6650-01-039-4795
NSN 5975-01-141-6889
NSN 6645-00-103-2517
NSN 5998-01-574-5312
NSN 2925-01-415-0264
NSN 5950-01-312-1536
NSN 5895-01-052-4877
NSN 5910-00-636-3840
NSN 6645-00-008-3944