WFDN Series Waterflow Detector
The WFDN Series Waterflow Detectors are designed for use in both residential and commercial fire protection systems, providing accurate and reliable detection of water flow. These detectors feature a rugged, NEMA 4-rated enclosure that is more damage-resistant than traditional metal designs, suitable for both indoor and outdoor installations. They operate across a wide temperature range from 32°F to 150°F and are approved for installation on the widest range of pipe schedules—from Schedule 7 through 40, for sizes 2 in. to 8 in.—and can be mounted in vertical or horizontal positions.
- 🔹 Directional cover allows easy identification of flow direction
- 🔹 UL-listed models with NEMA 4 rating
- 🔹 Lightweight, corrosion-resistant, and unpainted enclosure
- 🔹 Sealed retard mechanism immune to dust and contaminants
- 🔹 Reduced exposed metal minimizes shock hazard
- 🔹 Plastic cover acts as an insulator and resists arcing
- 🔹 Visual and audible (73 dBA) switch activation
- 🔹 Field-replaceable timer/switch assembly
- 🔹 Accommodates up to 12 AWG wire
- 🔹 Switch synchronization activates both alarm panel and local bell/horn strobe
- 🔹 Tamper-resistant cover screws
- 🔹 Wire-ready terminals with improved layout
- 🔹 Snap-in optional cover tamper switch
- 🔹 Improved timer repeatability and accuracy
- 🔹 Compatible with Schedule 7–40 steel pipe (2–4 in.) and Schedule 10–40 (5–8 in.)
- 🔹 Provides reliable primary signaling for fire sprinkler systems
- 🔹 Enhanced performance under vibration and water surge conditions
- 🔹 Reduces false alarms through mechanical time delay and sealed retard mechanism
- 🔹 Easy installation with directional markings, wire-ready terminals, and improved sealing
- 🔹 Lightweight and corrosion-resistant housing extends product life
Ideal for monitoring waterflow in fire sprinkler systems installed in commercial, industrial, and residential buildings. Suitable for use with Schedule 7–40 steel pipes (2–8 in.) in both vertical and horizontal positions, ensuring reliable alarm activation in all system configurations.
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