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 5998-01-611-1219
NSN 5945-01-476-1668
NSN 5905-00-066-8545
NSN 6150-00-288-6245
NSN 5930-01-223-4871
NSN 5965-00-050-3590
NSN 2925-01-484-8556
NSN 2925-01-013-0413
NSN 6320-01-361-7467
NSN 5920-01-433-3097
NSN 5930-01-170-4426
NSN 4140-01-034-9806