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 6145-01-441-4239
NSN 5925-01-445-5333
NSN 6645-00-928-7208
NSN 5965-01-300-9664
NSN 5925-01-590-0171
NSN 5996-00-587-3795
NSN 5925-01-539-6974
NSN 5925-01-242-9945
NSN 6105-01-051-2091
NSN 5998-00-136-0667
NSN 6320-01-176-8367
NSN 6320-01-624-0193