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 6240-01-567-2376
NSN 5990-00-711-9890
NSN 5920-01-437-7513
NSN 5905-01-483-0593
NSN 5990-01-355-8875
NSN 5835-00-856-6744
NSN 5905-01-423-4638
NSN 6145-00-990-9700
NSN 6135-01-501-2407
NSN 5835-01-263-0176
NSN 6610-01-169-6134
NSN 5996-01-444-5409