Criterion 6.3.10 Backflow

Criterion text:
Means shall be provided to prevent backflow of non-potable fluids into the potable water system.

Comments:
Installer must follow the directions provided in the SRCC approved installation manual and also be aware of local code requirements regarding this issue.

Many jurisdictions require that a check valve be installed in the service line to prevent water that has entered the home from flowing back into the water supply system. When a check valve is installed, an expansion tank is also required in the water supply plumbing

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