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 5835-01-028-4007
NSN 6150-00-196-0696
NSN 6610-01-081-9237
NSN 5915-01-406-6540
NSN 4140-01-645-6906
NSN 6320-01-116-3980
NSN 6645-01-408-0011
NSN 6620-01-102-0008
NSN 5930-00-186-0712
NSN 5990-00-582-0342
NSN 5895-01-615-6187
NSN 5930-00-894-2915