A pressure differential of just 0.5 to 0.7 bar is enough to buckle a housing. Installing vacuum relief valves or keeping ...
The Cool Down on MSN
Homeowner replacing water heater learns old relief-valve line can't serve as heat pump drain
"That line isn't legal because it goes uphill, it's undersized, and it appears to be kinked." ...
The Cool Down on MSN
First-time homeowner finds missing expansion tank, learns the bigger plumbing risk is the valves
"I wouldn't worry too much about the past pressure as long as you don't have drippy faucets." ...
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