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 5920-01-316-5014
NSN 5920-00-509-5073
NSN 5950-00-840-2871
NSN 6610-01-065-1073
NSN 6110-00-271-9928
NSN 5920-00-492-5516
NSN 5975-01-323-5876
NSN 5855-00-610-4052
NSN 6130-01-109-8178
NSN 6220-00-986-0813
NSN 2925-01-121-3355
NSN 5920-00-094-0655