How to Replace a Clogged Shower Valve

Posted by in Home Improvement Tips, on November 8, 2015

Watch the full episode: https://www.youtube.com/watch?v=kUWK-faJlAk&index=8&list=PLkJADc1qDrr-U3jevgVkJt9YXYy_ZfHau

This Old House plumbing and heating expert Richard Trethewey replaces a clogged shower valve that would not allow hot water into the shower.

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Shopping List for How to Replace a Clogged Shower Valve:
– New shower-valve cartridge, used to replace old cartridge
– Rag, used to cover tub drain
– Waterproof grease, used to lubricate new valve
 
Tools List for How to Replace a Clogged Shower Valve:
– Screwdriver
– Pliers
– Pocketknife, for removing the retainer clip
– Plastic shield, used to prevent water from dripping behind wall

Steps for How to Replace a Clogged Shower Valve:
1. Cover the tub drain with a rag to prevent any dropped parts from falling into the drain.
2. Unscrew and remove the handle and escutcheon plate from the shower valve.
3. Close the hot- and cold-water shutoff valves to the shower.
4. Use a pocketknife to carefully pry the retainer clip from the shower valve.
5. Hold a plastic shield beneath the valve to catch any water, then use pliers to pull out the old shower cartridge.
6. Smear waterproof grease onto the O-rings of a new shower-valve cartridge.
7. Push the new cartridge into the shower valve, making sure you correctly orient the hot- and cold-water indicators.
8. Press the retainer clip onto the valve to secure the cartridge.
9. Open the hot- and cold-water shutoff valves.
10. Reinstall the escutcheon plate and handle.

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