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 6240-00-832-6867
NSN 6650-00-244-5648
NSN 6150-01-482-2190
NSN 5905-00-239-1035
NSN 6620-01-156-0814
NSN 5945-01-050-8453
NSN 4140-01-573-7272
NSN 5975-01-510-3917
NSN 5910-01-520-3519
NSN 7035-01-623-4739
NSN 6220-01-275-8548
NSN 5945-01-605-8431