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 5945-01-059-8610
NSN 5975-00-281-1001
NSN 5910-01-219-4866
NSN 5920-00-035-4846
NSN 5985-01-477-8340
NSN 5950-00-951-4287
NSN 6320-01-249-3236
NSN 6150-01-318-4918
NSN 5999-00-726-4282
NSN 5975-01-301-3684
NSN 5910-01-643-2051
NSN 6320-00-343-1798