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 5855-01-438-4588
NSN 5835-01-457-5630
NSN 6220-01-062-2077
NSN 6110-00-819-4917
NSN 5975-01-634-0678
NSN 2925-00-928-5931
NSN 5930-01-444-8137
NSN 5975-01-025-3602
NSN 6135-01-529-8523
NSN 7035-01-354-7056
NSN 5990-01-525-2250
NSN 6220-01-027-1294