Plumbing Questions? Ask a Plumbing Expert.
Hi my name is ***** ***** I have been in the plumbing field for 20 years. I will be glad to help you today. When you removed the old cartridge, did you see if the old gasket was stuck in the back of the valve body or did it come out with the cartridge? Is the gasket at the back of the new cartridge seated in the groove?