The end connection identified above as the second end is the valve inlet
A valve having an orifice in the poppet, disk, or the like, to permit restricted fluid flow when the valve is seated. It does not have a stem or provisions for pressure adjustments, and is similar to a valve, check with the exception of the orifice which permits fluid flow in more than one direction.
Classification: Check valves of materials other than copper, iron or steel
NSN 6130-00-016-7368
NSN 5925-00-245-3391
NSN 5985-01-161-4117
NSN 2925-01-224-1885
NSN 6620-01-431-9176
NSN 6645-00-088-4079
NSN 6645-01-162-8023
NSN 6610-00-068-7143
NSN 6135-01-377-5729
NSN 6145-00-427-7201
NSN 6110-00-636-1234
NSN 5910-01-392-0206