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 5835-00-770-2843
NSN 4140-01-299-2500
NSN 5925-01-258-4640
NSN 5920-01-268-2188
NSN 7035-01-525-2120
NSN 5960-00-819-3926
NSN 6220-01-421-9928
NSN 4140-01-594-1691
NSN 6645-00-209-5778
NSN 5990-00-277-3763
NSN 6130-00-910-4542
NSN 6645-00-279-1777