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The standard GM40AV model is a synchronous drive unit
High-Flow Capacity: Rated for up to 270
For larger pipe diameters
including the TVS-811 and EM variations
ensuring consistent airflow and thermal management for critical refrigeration and HVACR systems
McDonnell & Miller 247-2 Water Feeder R-410A The standard GM40AV model isThe McDonnell & Miller 247 2 (Part Number 133800) is a heavy duty mechanical water feeder specifically designed for steam and hot water boilers requiring consistent cold water makeup. This unit features a built in No. 2 Switch, providing integrated Low Water Cut Off (LWCO) functionality with two snap acting SPDT switches. This configuration ensures that if the water level drops below a safe threshold, the burner circuit is interrupted while
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