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 7035-00-731-8729
NSN 6110-01-648-5202
NSN 5990-00-085-4299
NSN 6145-00-968-6603
NSN 6220-01-176-6408
NSN 5905-00-806-5609
NSN 5930-01-651-0853
NSN 5999-00-456-0603
NSN 6240-00-242-6231
NSN 5960-01-239-9651
NSN 7035-00-390-6917
NSN 6135-00-735-8530