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 5950-01-205-8137
NSN 6610-01-477-6476
NSN 5985-00-277-0575
NSN 6685-01-525-7586
NSN 5835-01-119-8561
NSN 6650-01-082-1533
NSN 6130-01-452-0784
NSN 6650-00-400-8371
NSN 5996-01-582-7418
NSN 5835-01-035-2976
NSN 6130-01-154-1119
NSN 5920-00-211-4512