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 6650-01-245-9781
NSN 5935-01-117-6722
NSN 6150-01-253-0910
NSN 4140-00-900-6102
NSN 5975-01-625-7210
NSN 6320-01-106-4414
NSN 5925-00-403-2571
NSN 5999-01-056-5189
NSN 5950-01-008-6948
NSN 6650-01-318-9413
NSN 4140-01-572-7027
NSN 5855-00-256-5562