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 6150-00-226-4707
NSN 5855-00-869-3635
NSN 5905-00-296-8763
NSN 6220-01-566-3554
NSN 2925-01-067-4446
NSN 6135-01-345-8813
NSN 5998-01-561-7945
NSN 6610-01-032-5335
NSN 6130-01-566-1925
NSN 5965-01-544-7324
NSN 5998-01-118-2423
NSN 6110-01-050-8119