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 5925-00-244-7418
NSN 6145-00-635-9957
NSN 5985-01-062-0675
NSN 6645-00-816-5337
NSN 6645-01-633-1852
NSN 5945-01-442-7188
NSN 5925-01-565-0177
NSN 5990-01-411-5930
NSN 6320-01-364-1840
NSN
NSN 5835-00-908-8327
NSN 5855-01-136-9532