Genuine OEM Air Compressor Check Valve A19712.
Part # A19712
1/2: NPT to Tank X 3/8" Compression fitting at Tube.
This Is An Original Equipment Part, NOT an Inexpensive Aftermarket.
Fit Many Dewalt, DeVilbiss, Porter Cable, Makita, Sears, Ex-Cell, Black & Decker, Delta and more....
Fits Too Models to List.