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 5925-00-699-8140
NSN 5990-00-150-6979
NSN 6220-01-389-8933
NSN 6645-00-171-9639
NSN 5950-00-916-1420
NSN 6105-01-359-2962
NSN 6240-00-117-9957
NSN 2925-00-839-6815
NSN 5910-00-528-9714
NSN 5990-00-323-8856
NSN 6130-00-130-1156
NSN 5975-01-537-0602