What is the main function of backflow protection in a hot water system?

The main function of backflow protection in a hot water system is to prevent contamination of the water supply. Backflow occurs when water flows in the opposite direction than intended, which can happen due to changes in pressure within the system. This reversal can allow contaminants from non-potable sources, such as wastewater or chemicals, to enter the potable water supply.

Backflow prevention devices, such as check valves and air gaps, are specifically designed to maintain the integrity of the drinking water supply by ensuring that any potential contaminants are kept from mixing with clean water. Therefore, incorporating effective backflow protection is crucial for safeguarding public health and maintaining compliance with plumbing regulations that mandate safe drinking water standards.