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The system sensor WFD Series is compatible with SCH 10 to 40 steel pipe, sizes 2 to 8 in and can be mounted in a vertical or horizontal position. The WFD Series consists of a rugged, NEMA 4 rated enclosure. Designed for both indoor and outdoor use, the WFD Series operates across a wide temperature range, from 32 to 120 deg F. UL listed models are equipped with tamper-resistant cover screws to prevent unauthorized entry. Inside, two sets of SPDT (form C) synchronized switches are enclosed in a durable terminal block to assure reliable performance. The WFD Series incorporates a mechanical retard feature, which minimizes the risk of false alarm due to pressure surges or air trapped in the sprinkler system. In addition, the mechanical retard's unique sealed design is immune to dust and other contaminants. The WFD Series is designed to simplify installation. Two conduit openings permit easy attachment to the local alarm system. The retard mechanism and dual SPDT switches are field replaceable.
System Sensor® Waterflow Detector, WFD Series, 4 in Nominal, SPDT, 450 psi, 4 to 10 gpm Flow Rate, 125/250 VAC, 10 A, 1/2 hp, Red, 32 to 120 deg F
| Amperage Rating | : | 10 A |
| Color | : | Red |
| Configuration | : | SPDT |
| Flow Rate | : | 4 to 10 gpm |
| Nominal Size | : | 4 in |
| Power Rating | : | 1/2 hp |
| Pressure Rating | : | 450 psi |
| Series | : | WFD Series |
| Temperature Rating | : | 32 to 120 deg F |
| Voltage Rating | : | 125/250 VAC |
- Sealed retard mechanism immune to dust and other contaminants
- Visual switch activation
- Field replaceable retard mechanism and SPDT switches
- Rugged, dual SPDT switches enclosed in a durable terminal block
- Accommodates up to 12 AWG wire
- 100% synchronization activates both alarm panel and local bell
Specification Sheet