System Sensor WFD 40 Water Flow Detector – 4 Inch

System Sensor WFD 40 Water Flow Detector – 4 Inch shall be installed on system piping as designated on the drawing and/or as specified herein. Detectors shall mount on any clear pipe span of the appropriate nominal size, either a vertical upflow or horizontal run, at least 4˝ from any fittings that may change water direction, flow rate, or pipe diameter or no closer than 24˝ from a valve or drain. Detectors shall have a sensitivity in the range of 4 to 10 gallons per minute and a static pressure rating of 450 psi* for 2˝ – 8˝ pipes. The detector shall respond to water flow in the specified direction after a preset time delay that is field adjustable. The delay mechanism shall be a sealed mechanical pneumatic unit with a visual indication of actuation.

Features

• 100 percent synchronization activates both alarm panel and local bell
• Sealed retard mechanism immune to dust and other contaminants
• Rugged, dual SPDT switches enclosed in a durable terminal block
• Two-inch mounting hole provided in new WFD30-2 models
• Field-replaceable retard mechanism and SPDT switches
• Designed for both indoor and outdoor use
• UL-listed models are NEMA 4 rated
• Accommodates up to 12 AWG wire
• Tamper-resistant cover screws
• Visual switch activation

Specifications

• Product: Water Flow Detector
• Brand: System Sensor
• Model: WFD 40
• Pipe Size: 4 Inch
• Hole Size: 2 Inch
• Static Pressure Rating: 450 PSI
• Maximum Surge: 18 Feet Per Second (FPS)
• Compatible Pipe: Steel water pipe, schedule 10 through 40
• Contact Ratings: Two sets of SPDT (Form C) 10.0 A, ½ HP @ 125/250 VAC 2.5 A @ 6/12/24 VDC
• Warranty: 3 Years