McDonnell & Miller 113200 - FS1 High-Sensitivity Liquid Flow Switch
SKU: FS1
The McDonnell & Miller FS1 (Xylem part 113200) is a vapor-proof general-purpose liquid flow switch designed for pumps, water-source heat pumps, and HVAC piping up to 1" NPT. The SPDT snap-action switch (15A @ 120/240 VAC) actuates on flow rates as low as 1 GPM in water, providing reliable interlock or alarm signaling. Brass body construction with a stainless-steel paddle suits closed-loop hydronic and chilled-water service.
Specifications
| Manufacturer | McDonnell & Miller (Xylem) |
|---|---|
| Manufacturer Part Number | 113200 |
| Model | FS1 |
| Type | Liquid Flow Switch (Vapor-Proof) |
| Connection | 1" NPT |
| Switch | SPDT, 15A @ 120/240 VAC |
| Minimum Actuation | 1 GPM (water) |
| Body | Brass with stainless-steel paddle |
| Weight | 3 lbs |
| Federal SKU | FS1 |