The Best of Ask This Old House: 44 Common Household Projects
Season 2, Episode 3: Installing a Single-handle Shower Valve
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Richard helps a homeowner replace an existing three valve shower control with a single-handled mixing valve. In a three-valve control, one handle controls hot water, one handle controls cold, and the third handle diverts water from the spout up to the showerhead. The new single-handle valve prevents scalding, should there be a sudden drop in cold water pressure.
