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 5935-00-100-1147
NSN 5965-01-629-0239
NSN 6240-01-316-8622
NSN 5975-01-421-3521
NSN 5895-01-431-7007
NSN 7035-00-205-1932
NSN 5999-01-071-7408
NSN 5998-01-045-1586
NSN 6150-01-425-2807
NSN 5950-00-268-3292
NSN 6610-01-415-8008
NSN 5985-01-025-6051