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 5925-01-238-4607
NSN 5998-00-475-5324
NSN 6620-01-100-0431
NSN 5999-01-124-1926
NSN 6320-01-232-4664
NSN 6220-01-424-0687
NSN 5965-01-220-0529
NSN 5905-01-047-4640
NSN 5895-00-984-4158
NSN 5999-01-287-2608
NSN 5990-01-455-8035
NSN 5999-01-524-6775