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 5950-01-242-4436
NSN 6105-01-461-9317
NSN 5905-01-106-3515
NSN 6320-00-483-0451
NSN 5920-01-080-3563
NSN 5855-00-973-5717
NSN 6645-01-185-7684
NSN 6620-00-897-7759
NSN 6685-00-188-1991
NSN 6220-01-272-5872
NSN 6620-01-010-0518
NSN 5910-00-201-1874