Flight safety critical
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.
Classification: Check valves of steel
NSN 5999-01-174-4944
NSN 5945-01-174-3457
NSN 5990-01-485-0260
NSN 6685-00-001-6459
NSN 4140-01-175-7081
NSN 6650-00-433-4929
NSN 5920-01-200-6655
NSN 5965-01-055-7645
NSN 6135-01-477-5259
NSN 5915-01-626-5026
NSN 6620-01-419-2992
NSN 5990-01-004-6343