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 5985-00-912-6618
NSN 6240-00-232-1093
NSN 5935-01-354-2809
NSN 5905-01-372-0785
NSN 6240-00-617-9599
NSN 6110-00-887-1750
NSN 5915-01-593-8937
NSN 5930-01-157-9824
NSN 6145-01-329-3685
NSN 5935-01-319-2448
NSN 5960-01-331-3817
NSN 5935-00-725-4382