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 5945-01-151-4418
NSN 5835-01-495-0595
NSN 6105-01-577-0014
NSN 5998-01-560-0563
NSN 2925-01-166-4589
NSN 5835-01-626-9603
NSN 6145-01-064-4171
NSN 5905-01-485-3327
NSN 5945-01-451-3910
NSN 4140-01-017-6850
NSN 5930-00-133-4033
NSN 5930-00-822-6020