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Home --> Fire Alarm Systems
new WFDseries
  • General
  • Feature
  • Specification
The System Sensor WFD Series vane-type waterflow detector, with a computer designed paddle, fits Schedule 10 through Schedule 40 steel pipe sizes 2_through 8_. The design of this unit makes it easy to install and simple to maintain. It can be mounted in a vertical or horizontal position and is suitable for indoor and UL-listed outdoor wte-pipe sprinkler installations. Switch assembly and delay mechanism assembly are field replaceable.
Sealed Retard Assures that the adjustable retard is not contaminated by dust and dirt when the cover is removed. Visual Switch Activation Permits installer to accurately set the retard even under extremely noisy conditions. Mechanical Delay Adjustment The pneumatic delay is preset at dial setting 2 in the factory. To adjust the delay, move the adjustment dial to the desired number. Rugged Switch Assembly Switches are enclosed in a durable terminal block for added strength. Accommodates up to 12 AWG wire. 100% Synchronization Activates both alarm panel and local bell at the same time. Durable Tamper Resistant Enclosure Red epoxy painted metal cover completely encloses the electrical components to keep out dust and dirt. Improved self-guiding security screws and removal tool make detector resistant to tampering; wiring diagram inside cover simplifies field maintenance.
Specifications Static Pressure Rating: 250 PSI (Max.) Triggering Threshold Bandwidth (Flow Rate): 4-10 GPM Maximum Surge: 18 FPS Compatible Pipe: Steel water pipe, schedule 10 through 40 Contact Ratings: Two sets of S.P.D.T. (Form C) 10.0 A @ 125/250 VAC 2.5 A@ 24 VDC Conduit Entrances: Two openings for 1/2_conduit Operating Temperature Range: 32 _ to 120 _ (0_ to 49_) Sizes Available: For schedules 10 through 40, sizes 2 through 8