Circle seal control model c2949b applies; cartridge type
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 copper having a pressure rating of 850 kpa or over
NSN 4140-00-597-5260
NSN 5998-01-032-0221
NSN 5990-00-155-2306
NSN 5945-00-908-8060
NSN 4140-00-778-8790
NSN 5999-01-079-2343
NSN 5895-00-232-5355
NSN 5990-01-033-1423
NSN 5910-01-137-8956
NSN 6685-00-069-5768
NSN 6145-01-382-7856
NSN 6645-01-171-4528