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 6135-01-540-2403
NSN 5925-01-330-2362
NSN 5945-01-016-2747
NSN 6110-00-818-2457
NSN 5999-00-957-9955
NSN 5925-01-570-8630
NSN 6240-01-010-2991
NSN 6320-01-415-0953
NSN 5985-01-289-5243
NSN 6240-00-726-4547
NSN 5975-01-384-4158
NSN 5930-00-854-6199