Water Flow Switches

The System Sensor WFDN series is compatible with schedule 7 through 40 steel pipe, for sizes 2" through 4" and compatible with schedule 10 through 40 steel pipe, sizes 5" through 8" and can be mounted in a vertical or horizontal position.

The System Sensor WFDTN T-tap waterflow detectors are designed for signaling in residential systems and branch line signaling.

  • Allows installers and inspectors to easily see the direction of flow
  • Visual switch activation
  • UL Listed