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 5905-00-117-6467
NSN 6135-01-122-4448
NSN 5985-01-415-0274
NSN 6620-00-155-2608
NSN 5950-01-558-4557
NSN 5945-01-254-6629
NSN 5945-00-828-2074
NSN 6150-01-135-9784
NSN 5855-00-869-3635
NSN 5950-01-629-7170
NSN 5990-01-020-6841
NSN 6145-01-028-9984