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 6240-01-433-7512
NSN 6620-01-477-3720
NSN 6610-01-189-3001
NSN 6110-00-655-2937
NSN 5945-01-557-9540
NSN 5925-00-052-5874
NSN 5925-01-139-3866
NSN 5910-01-111-2609
NSN 5915-00-836-7425
NSN 5905-00-405-5847
NSN 6650-01-623-5931
NSN 5990-00-565-9027