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 5965-01-445-9403
NSN 5960-01-319-0276
NSN 6135-01-612-4148
NSN 6650-00-751-9958
NSN 6610-01-464-3037
NSN 7035-01-366-5912
NSN 6685-01-008-5303
NSN 5915-01-418-1843
NSN 5920-00-929-8095
NSN 5855-01-417-3250
NSN 5895-01-453-9471
NSN 6645-01-302-9608