Double check
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 materials other than copper, iron or steel
NSN 6650-00-170-5095
NSN 6135-01-390-7364
NSN 6150-00-065-9584
NSN 6645-01-011-0419
NSN 6130-01-298-5732
NSN 5996-01-471-2130
NSN 5935-01-568-7066
NSN 5905-01-528-7351
NSN 6135-01-010-0891
NSN 5855-01-228-0942
NSN 6685-01-132-0939
NSN 5930-01-371-4260