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 6320-00-004-9158
NSN 4140-01-569-9999
NSN 5930-01-505-2360
NSN 5855-00-688-9954
NSN 5855-00-156-5489
NSN 7035-01-398-3494
NSN 6145-01-352-4471
NSN 5990-01-121-1175
NSN 5905-01-185-5012
NSN 5910-00-053-5481
NSN 6645-01-605-1485
NSN 5910-00-078-9208