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 5915-00-398-0677
NSN 5855-01-544-4401
NSN 5910-00-554-1422
NSN 5910-01-617-4826
NSN 5945-00-978-9975
NSN 5998-00-633-5169
NSN 2925-00-336-8364
NSN 6610-00-186-9180
NSN 5925-01-274-5993
NSN 6145-01-407-6593
NSN 6130-01-294-0387
NSN 6645-01-619-0524