Harwil Q-8N / Q-8CR Flow Switch, 8 to 1900 GPM, 1 in to 10 in Pipe
SKU PFS-Q-8CR/3/3/C
Harwil Q-8N and Q-8CR Flow Switch Built for dirty water. The Harwil Q-8N (Noryl) and Q-8CR (Fortron) cover 8 to 1900+ GPM across 1 inch to 10 inch and larger pipe. A single convolute elastomeric seal is continually flushed by the working...
- Flow range
- See model configuration
- Pipe size
- See model configuration
- Body material
- Fortron
Product drawings
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Reference drawing
Product diagram
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Reference drawing
Electrical diagram
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- 1Duty
- 2Sensing element
- 3Model configuration
- 4Electrical
Pipe and target flow
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Technical information
Description and specifications
Harwil Q-8N and Q-8CR Flow Switch
Built for dirty water.
The Harwil Q-8N (Noryl) and Q-8CR (Fortron) cover 8 to 1900+ GPM across 1 inch to 10 inch and larger pipe. A single convolute elastomeric seal is continually flushed by the working fluid, which is what lets this unit run in highly particle contaminated liquids.
| Flow Range | 8 to 1900+ GPM |
|---|---|
| Pipe Size | 1 inch to 10 inch and larger |
| Line Pressure | 50 psig operating, 100 psig non-operating |
| Temperature | 180 F continuous |
| Q-8N Body | Noryl engineering plastic (PPO) polyphenylene oxide |
|---|---|
| Q-8CR Body | Fortron |
| Wetted Surfaces | Noryl, 316 stainless steel |
| Seal | EPDM elastomeric standard, Viton special order |
| Switch Operation | SPDT |
|---|---|
| Switching Capacity | 15 amp |
| Drag Disk Shaft | Short, Medium, Long |
| Certification | UL Component Recognized, file E85349 |
- Mild acid and base solutions
- Contaminated groundwater and rusty coolant water
- Machine cutting oils and medium slurries
- Sea water, sewage, waste water
Noryl or Fortron?
Q-8N uses Noryl (PPO). Q-8CR uses Fortron. Choose based on the chemical compatibility your fluid requires.
Why does it handle contaminated liquid?
Particle contamination resistance comes from a single convolute elastomeric seal that is continually flushed by working fluid flow.