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 6620-00-280-2874
NSN 5935-01-501-1881
NSN 6105-00-318-4915
NSN 5925-01-291-7677
NSN 5855-00-782-7714
NSN 6610-01-473-5678
NSN 5985-01-380-0989
NSN 6145-01-644-3510
NSN 6650-01-645-2850
NSN 5855-01-027-1571
NSN 5996-01-389-7612
NSN 5965-01-011-1228