McDonnell & Miller 120201 FS7-4W 1-1/4" Flow Switch with NEMA 4X Enclosure
McDonnell & Miller 120201 FS7-4W 1-1/4" Flow Switch with NEMA 4X Enclosure
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Apply for Trade Account & Terms →| Performance Parameter | Engineering Baseline Value |
|---|---|
| Manufacturer Part Number (MPN) | 120201 |
| Model Designation | FS7-4W |
| Connection Size | 1-1/4 inch |
| Enclosure Type | NEMA 4X |
Protect your critical liquid piping systems with the McDonnell & Miller FS7-4W, designed to accurately monitor flow and trigger alarms or shut-off sequences. This robust 120201 model is specifically engineered to provide consistent detection of flow or no-flow conditions in industrial and commercial hydronic applications, ensuring peace of mind through reliable operation.
The unit operates using a precision-engineered paddle mechanism that detects changes in flow velocity within the pipe. When flow drops below the set point, the internal switch engages or disengages electrical circuits, providing a seamless integration with pump motor starters, valves, or process controllers.
Key System Performance Baselines:
- Enclosure Rating: NEMA 4X standard for superior protection against water ingress and corrosion.
- Connection Diameter: Designed for standard 1-1/4 inch pipe installations.
- Operational Reliability: Rugged construction ensures longevity in demanding mechanical room environments.
⚠️ Application Profile: Ideal for monitoring liquid flow in chilled water systems, hot water heating setups, and industrial process cooling lines where environmental protection is critical.
