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 5935-01-487-3783
NSN 7035-00-541-8516
NSN 5999-01-160-0578
NSN 5835-01-152-9483
NSN 6645-01-451-9735
NSN 6240-01-510-9299
NSN 6610-01-086-5334
NSN 6645-01-631-6074
NSN 6220-01-536-8165
NSN 6645-01-157-9080
NSN 5960-01-609-6565
NSN 6105-01-265-6969