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 5925-00-452-1270
NSN 6645-00-867-6724
NSN 5835-00-233-6327
NSN 6645-01-356-3105
NSN 5950-00-672-3398
NSN 5905-01-092-6924
NSN 6645-00-634-9317
NSN 6645-01-623-8825
NSN 6240-01-160-7934
NSN 5835-00-532-5910
NSN 5975-01-634-0678
NSN 4140-00-314-1025