4" (101.6 mm) Flow Switch - Waterflow Detector by System Sensor | UL & FM Approved!
- Buy 2 for $123.45 each and save 5%
- Buy 5 for $116.96 each and save 10%
- Buy 10 for $110.46 each and save 15%
|Part Number||Size||Compatible Piping||Temperature Rating|
|WFD4||4" (101.6 mm)||Schedule 7 to Schedule 40||32F to 150F (0C to 49C)|
|Overall Dimensions||UL Pressure Rating||Triggering Threshold Bandwidth Flow Rate||Maximum Surge|
|4.6"H x 6.8"W (116.8 mm x 172.7 mm)||450 PSI||4 Gallons to 10 Gallons Per Minute||18 Feet Per Second|
|Conduit Entrance||Enclosure Rating||Warranty||Availability|
|Two (2) 1/2" Conduits (Open and Knockout Type)||UL NEMA 4||3 Years||Usually ships within 48 hours|
4" (101.6 mm) Flow Switch is designed to detect fire sprinkler activations and send an alarm to a fire alarm panel and/or local fire authorities when water flows through fire system piping. Manufactured by System Sensor, a global fire alarm systems expert, this 4" (101.6 mm) WFDN-Series Waterflow Detector is designed for indoor and outdoor use in commercial, residential and industrial water-based systems.
This 4" (101.6 mm) Flow Switch is suitable for high and low temperatures and installs either vertically or horizontally on piping from Schedule 7 to Schedule 40. The NEMA 4-rated enclosure insulates electrical components and resists corrosion while giving installers and inspectors a clear view of flow direction.
The built-in timer on each 4" (101.6 mm) Flow Switch delays alarm activation and reduces the number of false alarms caused by pressure surges or trapped air. Choosing a delay setting of up to 90 seconds is easy as turning the timer dial.
4" (101.6 mm) Flow Switch includes features that make installation and setup in low-light environments simple, including high-contrast pad-printed markings, set-by-feel timer tabs, and raised texured lettering. Tamper switch covers (sold separately) snap into place and UL-listed models of the 4" (101.6 mm) WFDN-Series Waterflow Detector feature tamper-resistant cover screws that prevent unauthorized entry.