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 5965-01-476-4228
NSN 6320-01-373-7171
NSN 5925-01-483-2007
NSN 5930-01-188-6679
NSN 5990-01-010-5475
NSN 6135-00-444-1402
NSN 5998-01-152-1221
NSN 6220-01-379-4528
NSN 5930-01-271-4196
NSN 6220-01-592-0078
NSN 5835-00-868-8815
NSN 5930-00-208-5831