KWFS Series Brass Liquid Flow Switch 250V 8A for HVAC Systems with 1-8" Pipe Compatibility and IP65 Rating
The KWFS Series Brass Liquid Flow Switch provides reliable flow monitoring for HVAC and industrial applications. This IP65-rated switch features adjustable stainless steel paddles for pipe sizes from 1" to 8" and operates with a 250VAC 8A SPDT micro switch.
- Flow control for water and standard media including brine and glycol
- Reliable SPDT micro switch with 15(8A) 250VAC rating
- IP65 protection class for reliable operation in demanding environments
- Adjustable set point with internal screw calibration
- Stainless steel paddle and brass construction
- Maximum liquid temperature: 120℃
- Maximum working pressure: 13.5 Bar
Ideal for controlling and monitoring liquid flow in boilers, pumps, and various heating, cooling, and air conditioning equipment systems.
| Parameter | Specification |
|---|---|
| Operation Type | On/Off, single-stage, micro switch |
| Output | SPDT 15(8A) 24/250VAC |
| Flow Rate Adjustment | Internal screw |
| Sensing Element | Paddle |
| Liquid Applications | Hot, chilled, well, pool and sea water, brine or ethylene glycol |
| Material in Contact with Fluid | Brass |
| Paddle Material | Stainless steel |
| Liquid Temperature Range | -20℃ to 120℃ |
| Ambient Temperature Range | -40℃ to 85℃ |
| Ambient Humidity | 10-90% RH, non-condensing |
| Cable Entry | M18 Fitting |
| Housing Material | Fire Resistance ABS or PC |
| Protection Rating | IP65 |
| Color | White |
| Weight | 1.0 Kg |
| Model | Connection |
|---|---|
| KWFS-1 | 1/2" -14 NPT |
| KWFS-2 | 3/4" -14 NPT |
| KWFS-3 | 1" -11½ NPT |
The flow switch can be installed in any position away from elbows or throttlings, with arrow indicating flow direction. For vertical pipe installation, recalibrate range to balance paddle weight. When mounting downwards, avoid slag accumulation and install in straight pipe sections at least 5 times the pipe diameter upstream and downstream from the unit, away from filters and valves.
Factory calibrated at minimum sensitivity. To increase set point, turn adjustment screw clockwise. Cut-out value must be ≥ minimum flow necessary for plant protection.
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