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 5855-00-610-4052
NSN 5925-01-338-0969
NSN 6130-00-452-1486
NSN 6645-00-308-4179
NSN 6320-00-270-8222
NSN 6220-00-438-3849
NSN 5975-01-208-9668
NSN 6685-01-200-4652
NSN 2925-00-156-8963
NSN 5915-01-150-8073
NSN 7035-01-545-3212
NSN 6135-01-079-7852