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 5990-01-541-7671
NSN 5960-01-250-1095
NSN 5950-00-906-2273
NSN 5895-01-643-1468
NSN 5999-01-463-8641
NSN 5920-01-209-6368
NSN 6145-01-541-6337
NSN 6645-00-674-9728
NSN 6150-01-627-3196
NSN 6105-01-104-5214
NSN 4140-00-281-4493
NSN 6240-01-381-1072