Richard Trethewey replaces a three-handle shower valve with a single-handle anti-scald valve. (See below for a shopping list and tools.)
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Shopping List for How to Install an Anti-Scald Shower Valve:
- Single-lever pressure-balance shower valve with cover plate [https://amzn.to/2ZScZqk]
- Emery cloth [https://amzn.to/2MX73dT], for buffing clean copper pipe ends
- Lead-free solder [https://amzn.to/2MXXprp] and flux [https://amzn.to/2NRJanr], used for soldering
- Plumber's putty [https://amzn.to/2LrRCqW], for creating a watertight seal around the valve's cover plate
- Cotton cloth [https://amzn.to/2NQ0DwI], used to buff the valve clean

Tools for How to Install an Anti-Scald Shower Valve:
- Pliers [https://amzn.to/2LnfjSk]
- Screwdriver [https://amzn.to/2N3Nlxd]
- Cordless drill [https://amzn.to/2ZQS4nM]
- Handle puller [https://amzn.to/2ZR52Se], used to remove stubborn valve handles
- Pipe wrench [https://amzn.to/2ZQilT1], used to unscrew stem units from the valve
- 1/8-inch-diameter masonry bit [https://amzn.to/2MUIZIA], for boring holes through tile
- Oscillating multi-tool [https://amzn.to/2MWl2Au] and carbide-grit blade [https://amzn.to/2MVzjgP], used to cut tile
- Hammer [https://amzn.to/2UuaXvL] and 1/2-inch cold chisel [https://amzn.to/2LkaGse], for chipping tile off the wall
- Wet/dry vacuum [https://amzn.to/2O2xEpJ], used to collect dust
- Reciprocating saw [https://amzn.to/2NQJfI5] with metal-cutting blade [https://amzn.to/2NRIG0L], for cutting out the old valve
- Tubing cutter [https://amzn.to/2ZRN6Ha], used to cut copper pipe
- Plant mister [https://amzn.to/2LkBJ6F], used to mist the wall cavity with water prior to soldering
- Propane torch [https://amzn.to/2Lk34pF], for soldering
- Digital thermometer [https://amzn.to/2MWxOin], used to check hot-water temperature

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How to Install an Anti-Scald Shower Valve | Ask This Old House
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