Watts 0881399 Air Gap protecting expensive hardware from thermal

protecting expensive hardware from thermal stress

or a failing blower motor before installing the new 180-degree limit control

Does this bearing arrive pre-lubricated

74" WC setpoint

Watts 0881399 Air Gap protecting expensive hardware from thermalThe Watts 0881399 Air Gap (model 909 AG A) is a heavy duty, cast iron drainage fitting specifically engineered for Watts Series 909 RPZ backflow preventers within the " to 1" and 1 " to 2" size ranges. This genuine OEM component facilitates the physical separation required by plumbing codes between the relief valve discharge port and the drain line. By creating a visible, vertical air gap, it prevents cross contamination and back siphonage in the