Valve size 4.000 in.
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 5965-01-575-2388
NSN 6145-00-900-7081
NSN 6240-00-461-1451
NSN 6610-00-186-9180
NSN 6110-00-913-2574
NSN 6150-01-346-1299
NSN 6135-01-652-8615
NSN 5990-00-172-9260
NSN 6320-01-211-6578
NSN 5930-00-299-1066
NSN 6610-00-511-6201
NSN 7035-01-319-2315