VSR-S (EU) Vane Type Water Flow Switch
| Approvals | LPCB and CE Approved, UL Listed |
|---|---|
| Working Pressure | 20.7 bar (300 psi) |
| Connection | DN25 (1") BSPT Threaded |
| Pipe Sizes | DN25 (1”), DN32 (1¼”), DN40 (1½”) or DN50 (2”) (Select correct paddle size) |
| Flow Sensitivity Range | 15-38 LPM (4-10 GPM) - UL |
| Enclosure | Die-cast, red enamel finish Cover held in place with tamper resistant screws |
| Conduit Entrances | Two ½” openings provided for conduit or cable fitting. |
| Maximum Surge | 5.5 m/s (18 FPS) |
| Pressure Loss | 0.2 bar (3 psi) max. at 5 m/s |
The Model VSR-S (EU) is a vane type waterflow switch for use on wet sprinkler systems that use 25mm (1”), 32mm (1¼”), 40mm (1½”) or 50mm (2”) pipe size. The unit may also be used as a sectional waterflow detector on large systems.
The unit contains two single pole double throw snap action switches and an adjustable, instantly recycling pneumatic retard. The switches are actuated when a flow of 38 LPM (10 GPM) or more occurs downstream of the device. The flow condition must exist for a period of time necessary to overcome the selected retard period.