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McDonnell & Miller 120601 FS8-W 1" Flow Switch

McDonnell & Miller 120601 FS8-W 1" Flow Switch

Brand: McDonnell & Miller SKU: 120601
Regular price $338.95 USD
Regular price Sale price $338.95 USD
Sale Out of Stock - Call to Order
Ships Direct from Distribution β€” Dispatches in 24–48 Hrs
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Performance ParameterEngineering Baseline Value
Manufacturer Part Number (MPN)120601
Model DesignationFS8-W
Connection Size1"

Maintain precise control over your hydronic heating or process cooling systems with the McDonnell & Miller 120601, also recognized as the FS8-W 1-inch flow switch. This robust device is engineered to monitor liquid flow effectively, triggering a response when flow rates deviate from operational standards to protect critical system components from dry-firing or flow failure.

The unit utilizes a precision-engineered paddle mechanism that extends into the piping, sensing the physical movement of the fluid. As flow fluctuates, the mechanical force acts upon the paddle to open or close an internal electrical circuit, providing a reliable, automated safety interlock for pumps, burners, or alarms.

Key System Performance Baselines:

  • Flow Sensing Reliability: Consistent mechanical actuation designed for long-term hydronic service.
  • Rugged Construction: Built to withstand the rigors of industrial and commercial piping environments.
  • Safety Interlocking: Ideal for preventing equipment damage by disabling systems during low-flow conditions.

⚠️ Application Profile: Primarily used in commercial HVAC installations, chiller circuits, liquid cooling systems, and large-scale boiler loops to safeguard circulating pumps and heating elements.

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