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 5945-01-495-3673
NSN 6145-01-005-4111
NSN 5905-01-304-7483
NSN 6135-01-511-1975
NSN 5996-01-100-4361
NSN 5920-01-053-9797
NSN 4140-00-189-0235
NSN 2925-00-964-7128
NSN 6130-00-983-3104
NSN 5996-01-429-5712
NSN 6150-00-655-2914
NSN 6320-00-521-9350