Third end is bulkhead type ms33657
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 5835-01-125-6676
NSN 5895-00-024-7368
NSN 6110-01-566-9819
NSN 5925-00-950-2467
NSN 6135-01-167-7604
NSN 5855-01-333-9606
NSN 5855-00-233-2366
NSN 4140-01-608-0199
NSN 5990-01-373-7545
NSN 5935-01-408-6889
NSN 6240-00-941-8507
NSN 5990-01-449-7090