Categories: Bathroom

How to Replace a Shower Mixing Valve | This Old House

Fixing a faulty valve with This Old House plumbing and heating expert Richard Trethewey. (See below for a shopping list and tools.)
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Shopping List for Replacing a Shower Mixing Valve:
– new shower valve
– plumber’s grease, for lubricating O-rings

Tools for Replacing a Shower Mixing Valve:
– utility knife
– screwdriver
– pliers
– hex-key wrench

About This Old House TV:
This Old House is the No. 1 multimedia home enthusiast brand, offering trusted information and expert advice through award-winning television, a highly regarded magazine, and an information-driven website. This Old House and Ask This Old House are produced by This Old House Ventures, LLC and are presented on PBS by WETA Washington, DC.

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How to Replace a Shower Mixing Valve | This Old House
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View Comments

  • Do you know what is the sub base part number ? I tried to google it but cannot find one. Thank you.

  • I replace the whole valve assembly. Cold water pressure real good hot water pressure still low when full hot

  • Dang this was made 6 years ago feels so old. Great video though

  • Straight forward, good camera work, watch 7 then finally this one. Love Old House

  • My house has an old Pegasus shower I had to remove the shower handle and cartridge was unsalvageable it was torn and broken inside, I been looking everywhere for a new cartridge that fits and can not find one any suggestions or idea what valve I have?

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