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Backflow preventers are necessary on water loops where the water is used in a hydronic loop that heats or cools the water through a boiler or chiller system. This Watts backflow preventer is installed on a large boiler system that heat thousands of gallons of water. The hydronic loops are designed to be hermetic. Read more below.
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Backflow preventers are necessary on water loops where the water is used in a hydronic loop that heats or cools the water through a boiler or chiller system. This Watts backflow preventer is installed on a large boiler system that heat thousands of gallons of water. The hydronic loops are designed to be hermetic. However there are always some loss of water somewhere in the system. For safety purposes to prevent the boiler from losing all of its water, a make-up water loop is connected to the loop. The make-up water feed needs backflow preventers installed in the pipe to prevent any of the boiler or chilled water from getting back to domestic water feed for the make-up water.
The make-up water is usually fed of the domestic water which is used for drinking water and other domestic uses. Water inside the boiler or chilled water loop is usually dirty and deoxygenated. This water is not drinkable and actually cause serious illness if it made its way back to the domestic water loop for some reason. Backflow preventers prevent this from happening. Back flow preventors provide safety for domestic water sources which also feed a make-up water supply for a boiler or chilled water system.
