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 5945-00-127-8551
NSN 5990-01-134-2859
NSN 6135-00-299-6918
NSN 4140-00-538-1226
NSN 5960-00-887-9033
NSN 5998-01-094-5315
NSN 5895-00-974-9586
NSN 5835-00-138-7807
NSN 6110-01-006-6718
NSN 6685-01-179-4591
NSN 6320-00-701-0437
NSN 6320-00-456-2092