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 5996-01-080-7943
NSN 5925-01-142-7775
NSN 2925-01-648-6859
NSN 5905-01-271-2127
NSN 5998-01-493-2481
NSN 5945-01-062-0800
NSN 6320-01-103-6218
NSN 6685-00-803-6421
NSN 6110-00-269-2696
NSN 6220-01-577-6815
NSN 5990-01-177-2838
NSN 6685-01-627-0185