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 5965-01-379-7706
NSN 5990-00-202-5127
NSN 7035-01-400-3666
NSN 5985-00-862-3291
NSN 6130-00-535-0522
NSN 6610-01-275-9771
NSN 6650-01-207-0829
NSN 6135-01-171-9299
NSN 5998-00-498-8128
NSN 6135-01-353-3802
NSN 6320-01-006-6138
NSN 6220-01-245-9242