Multi-handle tub and shower faucets consist of one handle each for hot and cold water and, if a third handle is present, it’s used to divert the flow of water from the spout to the showerhead. The valves for all three of these components are compression stems. Repairing a compression stem is a project many homeowners who are handy with a few basic tools can do themselves. The easiest way to find the right replacement part is to know the name of the faucet’s manufacturer and the faucet’s model number. If you’re not sure, take the original valve to the store and match it to get the right replacement part. This project guide shows you how to repair a leak in the diverter, but if the leak is from a hot or cold water valve, these components can be repaired in the same way.

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