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 5935-00-753-1070
NSN 6105-01-559-4579
NSN 5965-01-433-1974
NSN 5945-01-382-9224
NSN 5905-00-201-5161
NSN 6220-01-386-6702
NSN 6130-01-571-8628
NSN 6645-01-633-1852
NSN 4140-01-166-6767
NSN 5985-01-031-8914
NSN 6685-01-101-3800
NSN 6105-01-278-9830