McDonnell & Miller 114642 FS4-3DS 1" Stainless Steel Flow Switch
McDonnell & Miller 114642 FS4-3DS 1" Stainless Steel Flow Switch
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Apply for Trade Account & Terms →| Performance Parameter | Engineering Baseline Value |
|---|---|
| Manufacturer Part Number (MPN) | 114642 |
| Model Designation | FS4-3DS |
| Connection Size | 1" |
| Body Construction | Stainless Steel |
| Switch Type | Dual SPDT |
Protect your hydronic equipment from damage caused by low-flow conditions with the McDonnell & Miller 114642, model FS4-3DS. This precision-engineered flow switch is designed to monitor liquid flow in HVAC and industrial systems, triggering an automatic response if flow rates drop below the required safety threshold to prevent potential overheating or pump cavitation.
The unit utilizes a sensitive paddle mechanism that extends into the piping, detecting movement and actuating its internal dual SPDT switches. This dual-switch configuration provides enhanced versatility, allowing for simultaneous control of secondary equipment or alarm signaling, while the stainless steel construction ensures long-term resistance to corrosion and fluid impurities.
Key System Performance Baselines:
- Durable Construction: High-grade stainless steel body built for demanding fluid applications.
- Control Versatility: Equipped with two SPDT (Single Pole Double Throw) switches for multi-circuit logic.
- Reliable Sensing: Designed for precise flow detection in 1-inch piping systems.
- System Safety: Prevents equipment failure by ensuring constant circulation in HVAC loops.
⚠️ Application Profile: Ideal for use in commercial boilers, industrial chillers, water treatment systems, and liquid transfer lines where real-time flow monitoring and secondary shut-off or alarm activation are required for safe operation.
