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 6320-00-937-5625
NSN 5990-00-881-1031
NSN 6135-00-284-1406
NSN 6685-00-420-2781
NSN 5965-01-130-1965
NSN 6105-01-337-2936
NSN 6645-01-356-3105
NSN 5895-00-539-8322
NSN 6320-00-593-0379
NSN 6320-01-230-8444
NSN 6320-01-585-8468
NSN 5855-01-054-5243