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Rheem PROTECH 3 1/4 in. Standard Shank Water Heater Temperature and Pressure Relief Valve SP12574 - The Home Depot
Check valve on cold line water heater? | Terry Love Plumbing Advice & Remodel DIY & Professional Forum
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How a Mixing Valve Can Get More Out of Your Water Heater - Water Heating Blog - Rheem Manufacturing Company
![Customer has a 40 gallon water heater that constantly runs out of hot water. They opted for a mixing valve instead of a larger unit. : r/Plumbing Customer has a 40 gallon water heater that constantly runs out of hot water. They opted for a mixing valve instead of a larger unit. : r/Plumbing](https://i.redd.it/xlgw25qsamw71.jpg)