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 5990-01-076-8901
NSN 5975-01-157-4305
NSN 6130-00-008-2039
NSN 4140-01-611-3559
NSN 2925-01-206-5232
NSN 5905-01-415-5116
NSN 6135-01-571-7488
NSN 6150-00-478-6091
NSN 7035-01-387-0493
NSN 7035-01-227-7492
NSN 6150-01-364-4393
NSN 6320-01-211-6578