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 6145-01-239-1710
NSN 5855-01-395-7429
NSN 6220-01-345-2845
NSN 2925-01-463-8856
NSN 5975-00-968-6668
NSN 5998-01-301-5616
NSN 5999-01-538-6481
NSN 6150-01-651-1316
NSN 5999-01-423-9876
NSN 6110-00-796-4534
NSN 2925-01-497-1364
NSN 6130-01-483-7898