That is correct. The check valve is on the back of the water heater and the cold water line goes into it. There also is a pressure relief valve on the outside at the top of the water heater.
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Dave & Barbara
KenWorth T2000
2005 Mobile Suites 38RL3 #2338
MorRyde IS 8K axles, LazyBoy recliners, LCD tv
Full time since '96
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