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 5925-01-463-9331
NSN 6135-00-660-8654
NSN 5985-01-274-5555
NSN 6620-01-032-3937
NSN 6145-01-323-6509
NSN 2925-01-113-6904
NSN 5960-01-199-1157
NSN 5950-01-603-6844
NSN 5965-01-227-4517
NSN 5985-00-165-3606
NSN 5975-00-905-5194
NSN 7035-00-679-9027