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 2925-01-604-8984
NSN 6105-00-403-0903
NSN 6650-01-128-8438
NSN 5990-01-351-4621
NSN 5935-01-436-9852
NSN 5920-01-227-6336
NSN 6645-01-199-7553
NSN 5985-01-328-6631
NSN 5965-01-360-0454
NSN 5996-01-501-6165
NSN 2925-01-440-9912
NSN 6145-01-235-2190