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 6650-00-009-1427
NSN 6150-01-432-0928
NSN 6610-00-361-6954
NSN 5975-01-578-5367
NSN 6645-01-060-5916
NSN 6220-01-277-9339
NSN 5965-01-254-6527
NSN 6135-01-628-1688
NSN 5975-00-462-2911
NSN 5935-00-020-9009
NSN 6240-01-358-7863
NSN 5996-01-032-2236