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indicating a restricted or stuck metering device
Specifically engineerd for FXTQ and FXMQ series indoor units
including the popular model S45 pump
This proving switch is essential for verifying air flow in rooftop units and ductwork
Belimo ZONE220N-35 Actuator 318172-701 indicating a restricted or stuckThe Belimo ZONE220N 35 is a high performance 2 way zone valve actuator engineered for precise hydronic control in commercial and residential HVAC systems. Featuring a 3 4 inch NPT female connection and a 3. 5 Cv flow coefficient, this motorized valve assembly is optimized for high pressure close off applications. The spring return zone valve mechanism ensures failsafe operation, providing a reliable normally closed position during power interruptions.
