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 6145-01-432-1767
NSN 5910-00-489-6972
NSN 6110-00-331-8472
NSN 5855-00-237-4088
NSN 5855-00-221-9435
NSN 5855-00-401-3442
NSN 6135-01-196-7399
NSN 2925-01-113-6904
NSN 2925-00-065-2244
NSN 6145-01-209-7469
NSN 5975-01-621-6537
NSN 5975-00-736-3420