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 5990-01-352-5255
NSN 6105-00-311-2375
NSN 6650-01-607-5817
NSN 5965-00-021-5620
NSN 5975-01-180-5193
NSN 4140-00-420-0251
NSN 5990-01-157-0441
NSN 7035-01-463-6559
NSN 5975-00-072-6075
NSN 6220-00-427-8155
NSN 5990-01-474-3477
NSN 5960-01-010-3083