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 6130-01-126-4523
NSN 5895-01-076-5356
NSN 6685-01-416-0106
NSN 5895-01-381-5642
NSN 5910-00-329-7360
NSN 5910-01-408-8721
NSN 6105-01-505-3367
NSN 6620-01-420-7465
NSN 5935-00-083-4011
NSN 5835-00-888-9422
NSN 5935-00-936-1511
NSN 5950-01-439-5990