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 5895-00-171-0412
NSN 5999-00-897-5908
NSN 7035-00-585-2113
NSN 6320-00-521-9350
NSN 6685-00-934-8676
NSN 5925-01-535-6212
NSN 5935-01-524-9133
NSN 6610-01-616-1334
NSN 5998-01-580-9171
NSN 5835-01-162-3042
NSN 6650-01-512-9650
NSN 5945-00-118-6246