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 5999-01-427-3702
NSN 5925-00-539-8372
NSN 5950-00-101-2387
NSN 6620-01-415-1622
NSN 6645-00-300-0401
NSN 6105-00-043-5446
NSN 6105-00-452-3855
NSN 5915-01-558-5602
NSN 5965-00-564-2889
NSN 5999-01-589-5640
NSN 5905-00-600-8138
NSN 6620-01-562-0113