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always maintain a minimum bend radius of 3 inches (76 mm)
the air-fuel mixture is fixed by the venturi design and does not require manual shutter adjustment
Key Benefits Direct Mount Integration: Designed for seamless direct mounting to control units
Always verify your specific chiller's parts manual for exact HVAC part compatibility
Easy Commissioning: Minimal tools required for installation and calibration
McDonnell & Miller 61-HD Low Water Cut Off Els PW 17895 always maintain a minimum bendThe McDonnell & Miller 61 HD (Part Number 140300) is a heavy duty mechanical low water cut off designed specifically for low pressure steam boiler applications. This head mechanism serves as a direct replacement component for Series 61 controllers, facilitating reliable burner circuit interruption when water levels drop below the safe line. Rated for a maximum steam pressure of 20 PSI, the 61 HD utilizes a high buoyancy float operated mechanism to