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 5905-01-631-1878
NSN 5925-01-646-6148
NSN 7035-01-630-6149
NSN 5999-01-147-5954
NSN 6105-00-840-6433
NSN 5930-00-186-9192
NSN 6240-01-372-2039
NSN 5930-00-922-9182
NSN 5990-01-504-9265
NSN 5935-01-376-1474
NSN 5999-01-435-5734
NSN 5945-01-268-6865