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 5985-01-654-4831
NSN 5960-00-070-4399
NSN 6620-00-852-8245
NSN 5996-00-811-8120
NSN 6105-01-215-4213
NSN 5996-01-337-5172
NSN 6220-01-103-2502
NSN 6150-00-741-6128
NSN 5905-00-086-3241
NSN 5910-01-183-9776
NSN 5835-00-280-8494
NSN 6645-00-614-5302