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 5855-01-154-1402
NSN 5965-00-223-1641
NSN 6135-00-422-3967
NSN 5905-01-266-9759
NSN 5990-00-155-2306
NSN 5990-01-065-0492
NSN 6240-01-534-5829
NSN 6150-00-754-9911
NSN 5996-00-100-4932
NSN 5996-01-207-0804
NSN 5915-00-528-9286
NSN 5950-01-309-4891