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 2925-00-594-1157
NSN 6240-01-361-9167
NSN 5999-00-875-1148
NSN 6620-01-434-6538
NSN 5930-01-053-5638
NSN 4140-01-160-8106
NSN 6645-00-295-0625
NSN 6620-00-165-1749
NSN 6610-01-657-5532
NSN 5960-01-429-5897
NSN 5905-00-827-2590
NSN 5920-01-123-9854