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 5985-00-721-1909
NSN 7035-00-312-3055
NSN 4140-00-570-3440
NSN 5985-00-100-1296
NSN 6610-01-372-9248
NSN 5990-00-170-4239
NSN 6135-01-020-1967
NSN 4140-00-501-7833
NSN 5835-01-123-8305
NSN 5910-01-626-6746
NSN 5950-01-435-6354
NSN 5895-00-031-3591