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 6620-01-428-3930
NSN 6685-01-526-9840
NSN 5855-01-457-3608
NSN 6240-00-388-6479
NSN 5920-01-539-3233
NSN 5996-00-518-4880
NSN 6645-01-560-3034
NSN 6110-00-387-3911
NSN 5915-01-223-9700
NSN 6145-01-634-0388
NSN 6220-00-892-5187
NSN 6220-01-358-7468