McDonnell & Miller 120611 FS251 General Purpose Flow Switch with NEMA 1 Enclosure
McDonnell & Miller 120611 FS251 General Purpose Flow Switch with NEMA 1 Enclosure
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Apply for Trade Account & Terms →| Performance Parameter | Engineering Baseline Value |
|---|---|
| Manufacturer Part Number (MPN) | 120611 |
| Model Designation | FS251 |
Reliable flow detection is essential for protecting hydronic equipment from damage due to insufficient flow rates, and the 120611 McDonnell & Miller FS251 provides the precision required for these critical systems. Designed for general-purpose applications, this flow switch serves as a dependable control mechanism to monitor the presence or absence of liquid flow in pipelines, ensuring that pumps and burners operate only under safe conditions.
The unit functions by utilizing a paddle-actuated mechanism inserted directly into the fluid stream. As flow moves the paddle, it mechanically activates a precision snap-acting switch, providing either a make or break contact based on your system's specific requirements. This direct mechanical response provides an immediate signal, making it ideal for maintaining consistent performance across various industrial and commercial installations.
Key System Performance Baselines:
- Durable Construction: Built to withstand rigorous operational demands while maintaining long-term sensitivity.
- Safety Enclosure: Features a robust NEMA 1 rated housing for protection against accidental contact.
- Precise Switching: Engineered for consistent, repeatable activation across a wide range of flow velocities.
⚠️ Application Profile: Ideal for monitoring liquid flow in HVAC water systems, hydronic heating loops, water treatment facilities, and process cooling lines where reliable pump protection is mandatory.
