CO 2 refrigeration (R-744) systems operate at significantly higher pressures compared to legacy hydrofluorocarbon (HFC) systems. For example, on hot summer days, between its medium-temperature ...
Q: My water heater leaks from some type of a brass valve on the side of the tank near the top. There is a pipe that comes out of the valve at a right angle that looks like it goes through the wall.
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