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 5950-01-465-5224
NSN 5950-00-161-9438
NSN 2925-00-993-7715
NSN 6130-01-109-6989
NSN 6685-01-430-1142
NSN 5920-01-587-7579
NSN 6650-01-004-0937
NSN 5925-01-394-5365
NSN 6650-01-598-4548
NSN 6610-00-858-2094
NSN 6645-00-139-2972
NSN 5835-01-177-1092