Have a leak and wonder why? If you're missing this part because you lost it, forgot to put it back in or deformed it, the absense of this part may very well be the source of the leak. The cup seal guide is there to keep the valve pin centered in the valve body. If it's missing chances are the cup seal will never sit right on the face of the valve body, hence creating the leak. Never fear, we have them here.
This is a replacement for Kingman part #11 in your manual.
