System Sensor WFD60N 6″ Fire Sprinkler Water Flow Switch – UL/FM, NEMA 4, 450 PSI

WFD60N 6″ Fire Sprinkler Water Flow Switch – UL/FM Listed

The System Sensor WFD60N is a 6 inch vane-type water flow switch built for high-capacity wet fire sprinkler systems. With a rugged NEMA 4 weatherproof housing and 450 PSI rating, it’s ideal for commercial and industrial applications requiring reliable flow detection and alarm signaling. UL Listed and FM Approved.

Top Features:

• Compatible with 6″ Schedule 7–40 steel pipe
• UL Listed and FM Approved for fire protection
• 450 PSI maximum pressure rating
• Adjustable pneumatic delay (0–90 seconds)
• Dual SPDT switches – 10 A @ 125/250 VAC
• Weatherproof NEMA 4 enclosure – indoor/outdoor use
• Audible and visual flow indicators
• Field-replaceable timer and switch components

Applications:

• Wet-pipe fire sprinkler systems
• Commercial and industrial fire riser installations
• High-volume water lines in fire suppression networks

Specifications:

• Operating Temperature: 32°F to 150°F (0°C to 66°C)
• Flow Sensitivity: 4–10 GPM
• Two 1/2″ NPT conduit openings
• Mounting: Vertical or horizontal pipe orientation

Installation Tip: Use the adjustable delay to avoid false signals caused by water surges. Follow NFPA 13 and 72 guidelines for best results.