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 5999-01-027-1252
NSN 6650-01-112-5634
NSN 5990-01-369-6915
NSN 5998-01-569-3044
NSN 7035-01-472-1999
NSN 5950-01-360-8728
NSN 6240-01-463-8276
NSN 6110-00-583-0463
NSN 6685-00-081-2864
NSN 6130-01-327-0227
NSN 6645-01-447-2446
NSN 2925-01-364-7926