Pilot operated
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 6320-01-198-4024
NSN 5935-01-268-9590
NSN 5985-00-462-9896
NSN 2925-00-912-3993
NSN 5910-01-646-8050
NSN 2925-01-532-0781
NSN 5996-01-247-4407
NSN 5835-01-227-4752
NSN 5975-01-536-2679
NSN 6150-00-180-8096
NSN 5920-00-526-9238
NSN 5960-01-516-7264