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 5999-01-236-1532
NSN 6220-00-512-3980
NSN 4140-01-188-2871
NSN 5915-01-494-0651
NSN 5950-00-206-3213
NSN 5945-01-031-1324
NSN 5960-01-168-1063
NSN 6610-00-401-2601
NSN 7035-01-146-7096
NSN 5985-01-449-0825
NSN 2925-01-424-0235
NSN 6610-01-010-3159