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 6240-01-318-1522
NSN 4140-01-442-6442
NSN 6145-01-622-2513
NSN 7035-01-027-2259
NSN 6150-01-455-2217
NSN 6240-01-389-6918
NSN 6610-00-075-6194
NSN 5910-01-041-7519
NSN 5965-01-408-9551
NSN 6105-00-103-2193
NSN 5985-01-042-5729
NSN 6685-01-377-9137