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 5998-01-540-6175
NSN 7035-00-585-2113
NSN 5985-01-100-4147
NSN 5998-01-325-6276
NSN 6145-00-759-6745
NSN 4140-01-333-2504
NSN 5915-00-112-3504
NSN 5996-01-314-7443
NSN 6620-01-350-0323
NSN 6650-00-641-6139
NSN 5985-01-069-5299
NSN 6105-00-432-9469