- Your water temperature isn't right. If a TMV valve stops working correctly, then you may notice that your hot water suddenly starts to run hotter than it should. ...
- Your water doesn't flow normally. ...
- You have leaks or drips.
What does a mixing valve do?
The term “mixing valve” has the general application of meaning any device in plumbing that controls the mix of hot and cold water to provide a comfortable temperature. ... Without the regulation of a mixing valve, this water might flow from your showerhead, bath faucet, or sink and cause you injury.Oct 28, 2013
What happens when a mixing valve fails?
Any mixing valve can allow a cross-over to occur should they become defective. A defective mixing valve will allow a cross-over of hot and cold water, even though there are no visible signs of trouble or leak. A plumbing cross-over can cause a complaint such as 'water not hot enough'.