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 2925-01-341-9400
NSN 5915-01-604-2947
NSN 6145-00-443-5488
NSN 5855-01-216-7633
NSN 4140-01-472-2768
NSN 5960-01-279-0985
NSN 5990-01-411-5930
NSN 6145-01-103-3273
NSN 6220-01-165-3635
NSN 6645-01-440-2962
NSN 6320-01-449-1014
NSN 5915-01-441-0388