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 4140-01-512-8528
NSN 6220-00-148-3462
NSN 2925-00-845-1480
NSN 6650-00-463-1514
NSN 5855-01-660-9717
NSN 6150-01-308-7056
NSN 5950-01-453-2617
NSN 5920-01-448-4858
NSN 5950-00-882-4155
NSN 6610-01-176-9314
NSN 2925-01-049-8906
NSN 5975-01-152-9353