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 5855-01-577-4091
NSN 5975-00-578-3642
NSN 6240-01-100-7105
NSN 5985-01-261-9134
NSN 5998-01-056-4076
NSN 4140-00-794-2960
NSN 5998-00-551-8450
NSN 5965-00-564-4399
NSN 5930-01-122-9589
NSN 6135-01-116-3385
NSN 6145-01-608-7478
NSN 5975-01-480-5627