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preventing fuel-rich or lean conditions that lead to heat exchanger fatigue or ignition failures
not for powering a millivolt thermostat circuit which requires a thermopile
Tripping is typically caused by a restricted chimney
engineered specifically for the 3/4" to 1" Watts 909 Reduced Pressure Zone (RPZ) assembly
Optimized Moisture Output: Patented PerfectFlo technology ensures an even flow rate across the entire humidifier pad for maximum evaporation
Watts 0881378 Air Gap Els PW 17895 preventing fuel-rich or lean conditionsThe Watts 0881378 Air Gap, professionally known as the 909 AG F, is an essential component for any contractor managing backflow preventer maintenance. Designed specifically for RPZ assembly discharge, this cast iron air gap provides the required unobstructed physical separation between the relief valve outlet and the receiving drain line. Integrating this unit ensures the system remains compliant with plumbing codes by preventing potential cross