Pressure Reducing Valves and Backflow Prevention Device/Assemblies Installation

The pressure reducing valve is designed for installation on potable water lines to reduce high inlet pressure to a lower outlet pressure. Pressure reducing valves can be installed on the service line after the meter or can be installed within the domestic potable water system where pressure reduction is necessary such as a boiler feed line. The pressure reducing valve installed on the service line reduces the pressure from the public water system distribution system to a lower, more sensible pressure. The most common place to find a pressure reducing valves is right after a water meter and upstream of the backflow prevention device/assembly, which helps ensure that the flow of water into a building is even and won’t damage pipes or fixtures.Pressure reducing valve can also be used in some cases to reduce fluctuating pressure that may occur in the service line. Some types of backflow prevention device/assemblies will during normal operational situations discharge water out of vents or relief valves when there is a drop in the incoming pressure. Installing the pressure reducing valve upstream of the backflow prevention device/assembly may reduce the discharge frequency from the vents or relief valves due to fluctuating line pressure. The backflow prevention device/assembly will not be impacted by fluctuating pressure if the inlet pressure is kept with a specified range. Pressure reducing valve ensures a constant flow of water at a functional pressure, as long as the supply pressure does not drop below the valve’s pre-set pressure, even if the supply water pressure fluctuates. The pressure reducing valves reduce the pressure of the inlet water line as well as evening out the pressure fluctuations.