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 6685-00-652-2657
NSN 5985-00-936-3823
NSN 5990-01-076-6858
NSN 5855-00-797-8217
NSN 5998-01-604-2311
NSN 6320-00-213-0477
NSN 5935-00-234-7771
NSN 5985-00-578-5189
NSN 5910-01-532-9753
NSN 5915-00-583-4970
NSN 5998-01-563-6349
NSN 5965-01-587-2366