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 6110-01-074-5677
NSN 6645-01-304-4308
NSN 6650-01-345-2866
NSN 2925-00-654-3206
NSN 5895-01-108-8019
NSN 5835-00-885-6030
NSN 7035-00-679-9027
NSN 5985-00-912-6618
NSN 5998-01-582-6329
NSN 5990-01-352-5255
NSN 5950-00-747-9644
NSN 5965-01-232-6509