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 6220-00-520-0333
NSN 5910-01-476-5044
NSN 6620-01-521-9710
NSN 6220-01-281-0184
NSN 5910-01-191-7504
NSN 5990-01-501-2579
NSN 6685-00-265-7530
NSN 4140-01-166-9289
NSN 5930-01-207-1012
NSN 6220-01-025-0482
NSN 7035-01-502-9967
NSN 5985-01-621-7247