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 5998-00-100-0162
NSN 6645-01-355-5067
NSN 2925-01-575-7376
NSN 2925-00-056-7112
NSN 5925-01-462-5438
NSN 6620-00-690-8905
NSN 6320-01-316-2190
NSN 5999-00-059-7573
NSN 5960-01-244-5442
NSN 6685-01-073-1773
NSN 5965-01-043-9357
NSN 4140-01-420-7269