V-F Series Flow Switch
The V-F vane actuated flow switch series is among the most commonly selected flow devices for aerospace applications in the Precision Sensors product line. Bellows technology provides a hermetic seal to a lever style vane which is displaced by the moving fluid. The vane design is not as susceptible to contaminated fluid as the magnetically actuated counterparts. Hermetically sealed contacts make it ideal when vapor ignition is a concern.
Typical uses include coolant flow systems.
Common fluids are water, PAO, red oil.
For qualification information, please consult the sales or engineering departments.
Features
- Intended for liquid media
- Non-magnetic vane actuated design
- Operates independent of mounting orientation
- Standard construction is CRES or aluminum, custom construction is available upon request
- Wetted materials are CRES, aluminum, tin-plated brass alloys
- Hermetically sealed contacts
Specifications *
| Specification | V21F | V121F | V221F |
| Available settings | 1.0 to 10.0 gpm | 5.0 to 20.0 gpm | 10 to 25 GPM |
| Repeatability | 0.05 gpm or 3% of setting | 0.3 gpm + 3% of setting | 0.5 gpm + 5% of setting |
| Deadband | 0.15 gpm or 10% of setting | 10% of setting | 0.5 gpm + 10% of setting |
| Proof pressure | 150 psig (high pressure configurations available) |
150 psig (high pressure configurations available) |
180 psig |
| Pressure drop | Approx. 12 psid at 2.5 gpm (model and flowrate dependent) |
Approx. 3 psid at 8 gpm (model and flowrate dependent) |
Approx. 5 psid at 25 gpm (model and flowrate dependent) |
| Operating temperature range | -40 to 250°F (high temperature configurations available) |
-40 to 250°F (high temperature configurations available) |
-40 to 160°F |
| Typical weight | 0.5 lbm standard configuration | 1.0 lbm standard configuration | 2.0 lbm standard configuration |
| Electrical rating | 7 Amps max. at 28 VDC | 7 Amps max. at 28 VDC | 7 Amps max. at 28 VDC |
| Switch configuration | SPST, SPDT | SPST, SPDT | SPST, SPDT |
| Fluid connections |
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| Electrical connections |
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| Warranty | 18 months | ||
* Specifications subject to change
