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 5950-00-027-4165
NSN 5960-01-350-2925
NSN 5975-01-423-8910
NSN 5985-00-734-7479
NSN 5945-00-753-5127
NSN 6220-00-943-2623
NSN 6610-00-226-4710
NSN 5920-01-289-0852
NSN 5998-01-044-9981
NSN 6610-00-419-7844
NSN 5996-01-525-5155
NSN 6130-00-246-8691