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System Sensor Flow Switch

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System Sensor’s WFD Series Waterflow Detector is usually installed on system piping as designated on the drawing and/or as specified herein. The detector shall respond to waterflow in the specified direction after a preset time delay that is field adjustable. The delay mechanism shall be a sealed mechanical pneumatic unit with visual indication of actuation. The actuation mechanism shall include a polyethylene vane inserted through a hole in the pipe and connected by a mechanical linkage to the delay mechanism.

Static Pressure Rating                                                                   450 Psi

Operating Temperature Range                                                  32°F to 120°F (0°C to 49°C)

Maximum Surge                                                                            18 Feet Per Second (FPS)

Enclosure Rating*                                                                        NEMA 4 – suitable for indoor/outdoor use

Triggering Threshold Bandwidth (Flow Rate)                        4–10 GPM

Cover Tamper Switch                                                                  Standard with ULC models, optional for UL models

Conduit Entrances                                                                       Two openings for ½˝ conduit. One open, one knock-out type

Contact Ratings                                                                            Two sets of SPDT (Form C) 10.0 A, ½ HP @ 125/250 VAC 2.5 A @ 6/12/24 VDC

Compatible Pipe                                                                          Steel water pipe, schedule 10 through 40