Air Gaps for Reduced Pressure Zone Assemblies provide an unobstructed, physical separation between the discharge end of a potable water supply line and an open receiving vessel. The installation of an air gap and drain line are recommended on reduced pressure zone assemblies. Air Gaps can be installed vertically or horizontally (vent elbow required for vertical installation.
WATTS® Air Gap, For Use With: Model 909/LF909 4 to 6 in Reduced Pressure Zone Assemblies, Model 909RPDA 4 to 10 in Reduced Pressure Detector Assemblies, Model 909/LF909M1 8 to 10 in Reduced Pressure Zone Assemblies, 9-5/8 in H, Import