How to clean a 22-32-42 Thermostatic Cartridge
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This article will explain how to check and clean a thermostatic cartridge in a 22-32-42 valve.
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Why should I clean my thermostatic cartridge
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Screen blocked by rust
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Screens block by mineral build up
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Clean screens
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Hot water enters through the cartridge bottom screen, cold water through the cartridge top screen. Rust and mineral build up (as pictured here) can restrict the flow of hot or cold water and consequently reduce or increase the mix temperature coming out of the valve.
Depending on the minerals your water contain, cleaning this kind of thermostatic cartridge may be needed from time to time and resolve the issue.
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The water supply shut off valves must be turned off- see article How to safely shut off a Kitchen or Bathroom Faucet/Shower
- This article requires that the cartridge be already removed from the valve. If it's not, you can view these articles:
Recommended tools: A recipient that can hold the cartridge, a soft bristle brush (like a toothbrush) and vinegar.
- Soak the cartridge in a recipient filled with a solution of 1/2 water and 1/2 vinegar for a few hours, preferably overnight if you can.
- Rinse the cartridge under clear water.
- If there are still residues on the screen, you can use a soft brush to remove them. You don't want to remove or break the screens, they act as filters.
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Canadian Consumers: Email or Call 1-866-473-8442
U.S. Consumers: Email or Call 1-800-777-9762
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