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 6645-01-228-2127
NSN 5999-00-081-9413
NSN 5905-01-540-7442
NSN 6130-01-272-8813
NSN 6240-01-090-9146
NSN 5999-01-038-7724
NSN 6650-01-348-8792
NSN 6620-01-062-1662
NSN 6220-01-040-5653
NSN 6145-00-851-8589
NSN 7035-00-981-7216
NSN 5855-01-592-3128