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 5950-00-052-8142
NSN 5985-01-323-3922
NSN 5999-01-466-1548
NSN 5990-01-472-2447
NSN 5935-01-048-1721
NSN 6645-01-538-5041
NSN 5920-01-335-9527
NSN 5915-01-411-6933
NSN 5855-01-128-1762
NSN 5925-00-434-5484
NSN 5965-01-341-1480
NSN 6135-01-033-3213