VICTAULIC S040760026 VCOC 4 WTRFLW SWCH ULC 2 SPDT WFD40A
System Sensor® Waterflow Detector, WFD Series, 4 in Nominal, SPDT, 450 psi, 4 to 10 gpm Flow Rate, 125/250 VAC, 10 A, 1/2 hp, Red, 32 to 120 deg F System Sensor, WFD40A, Waterflow Detector, 4in, WFD Series, SPDT, 450psi, 10A The system sensor WFD Series is compatible with SCH 10 to 40 steel pipe, sizes 2 to 8 in and can be mounted in a vertical or horizontal position. The WFD Series consists of a rugged, NEMA 4 rated enclosure. Designed for both indoor and outdoor use, the WFD Series operates across a wide temperature range, from 32 to 120 deg F. UL listed models are equipped with tamper-resistant cover screws to prevent unauthorized entry. Inside, two sets of SPDT (form C) synchronized switches are enclosed in a durable terminal block to assure reliable performance. The WFD Series incorporates a mechanical retard feature, which minimizes 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 retard mechanism and dual SPDT switches are field replaceable.
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