Description
The Caleffi 573493A Backflow Preventer is a standard part used in HVAC systems to help avoid polluted water leakage and that aim at protecting drinking water supplies. This backflow preventer has a 1/2” Sweat x 1/2” NPT connection and is constructed of brass for added durability. It operates on the basis of closing each time a reverse flow is detected so that the contaminants cannot gets into the clean water supply. Suitable for domestic and industrial application, it is applied in water heaters, boilers, and irrigation systems. Some benefits include; improved water safety, low inexpensives and legal compliance in the area of plumbing.









