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The WFD series sprinkler flow switches consists of a rugged, weatherproof enclosure. Designed for both indoor and outdoor use, the WFD series operates across a wide temperature range, from 0°C to 49°C.
UL, FM and ActivFire Listed with tamper resistant cover screws to prevent unauthorised entry. Inside, two sets of change-over contacts are enclosed in a durable terminal block to ensure reliable performance.
The WFD series incorporates a mechanical retard feature, which minimises 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 WFDT is a “T Tap” unit and comes with 12 flexible plastic paddles to fit 1˝, 1¼˝, 1½˝, and 2˝ tees. Sizes are marked clearly on the paddles for ease of installation. Plastic paddles slip over the actuating lever and are securely fastened with one screw. The handy depth gauge insures the proper installation depth and clearance of the detector to the tee.