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 5996-01-436-5254
NSN 6240-01-430-6937
NSN 6685-00-778-3905
NSN 6645-01-016-1306
NSN 5855-00-466-2309
NSN 6150-01-167-1827
NSN 5999-01-253-3504
NSN 6650-00-498-2416
NSN 6145-01-110-4219
NSN 5945-01-140-5619
NSN 6645-00-246-4934
NSN 6685-00-450-4496