Watts F391012 2" Reduced Pressure Zone Assembly LF909M1-QT-FS

The Watts F391012 2" Reduced Pressure Zone Backflow Preventer Assembly LF909M1-QT-FS is a safety measure that is used to guard against backflow in the HVAC and plumbing systems and to prevent the contamination of the potable water supply. It applies the concept of dual check system and has a relief valve to ensure that the system pressure is maintained and reverse flow is prevented. The assembly is installed in commercial or residential hydronic and HVAC systems and it operates with pumps, piping and control part to ensure safe operation.