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 5920-00-504-8634
NSN 5996-00-401-4904
NSN 5935-00-501-2742
NSN 6610-01-188-8163
NSN 2925-01-507-4797
NSN 6685-00-373-9555
NSN 5965-01-366-5900
NSN 5990-01-254-3197
NSN 6135-01-546-4588
NSN 5996-00-399-0731
NSN 5960-01-290-6919
NSN 6145-00-521-0001