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 7035-01-364-8454
NSN 7035-01-582-6442
NSN 6320-00-688-9983
NSN 5999-01-437-5176
NSN 5925-01-389-1215
NSN 6610-01-152-2821
NSN 6620-00-927-6177
NSN 6320-00-593-0379
NSN 5930-00-366-1357
NSN 5950-00-122-4497
NSN 2925-00-596-9775
NSN 5990-01-411-5930