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McDonnell & Miller 115400 FS6-3/4 3/4" High Sensitivity Flow Switch

McDonnell & Miller 115400 FS6-3/4 3/4" High Sensitivity Flow Switch

Brand: McDonnell & Miller SKU: 115400
Regular price $569.95 USD
Regular price Sale price $569.95 USD
Sale Out of Stock - Call to Order
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Performance ParameterEngineering Baseline Value
Manufacturer Part Number (MPN)115400
Model DesignationFS6-3/4
Connection Size3/4" NPT

Maintain precise liquid flow monitoring in your hydronic or industrial piping systems with the high-sensitivity McDonnell & Miller 115400 FS6-3/4 flow switch. This robust device is engineered to detect the presence or absence of flow in liquid lines, acting as a critical safeguard to prevent equipment damage due to low-flow conditions or system dry-running.

The unit functions through a paddle-actuated mechanism that triggers a switch when liquid movement pushes against the paddle. As flow increases, the paddle shifts to toggle the internal electrical contacts, providing reliable status feedback to controllers, pumps, or alarm circuits for total system protection.

Key System Performance Baselines:

  • Sensitivity Levels: Optimized for high-precision detection in residential and commercial applications.
  • Connection Standard: Designed for seamless integration into 3/4-inch NPT piping configurations.
  • Durability Focus: Built to withstand common hydronic pressure and temperature fluctuations.

⚠️ Application Profile: Ideal for use in boiler flow sensing, cooling tower water monitoring, hydronic heating loop protection, and industrial process cooling systems.

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