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 6150-01-425-1947
NSN 5985-01-271-3358
NSN 5950-01-451-5642
NSN 6150-01-540-9666
NSN 6645-01-452-9495
NSN 5985-00-232-2619
NSN 5990-01-231-1214
NSN 6145-00-321-3318
NSN 5996-00-463-6701
NSN 5905-01-189-1868
NSN 6105-01-559-1826
NSN 5996-01-037-2084