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 5855-00-245-8461
NSN 5920-00-317-2219
NSN 5925-00-975-0975
NSN 5945-00-529-6058
NSN 6240-01-440-9778
NSN 5950-01-086-3267
NSN 5905-01-146-4076
NSN 4140-01-040-1700
NSN 7035-00-050-9962
NSN 5895-00-194-0658
NSN 5996-00-952-7091
NSN 6150-00-913-4917