System Sensor WFD60N

The System Sensor WFD60N is a 6-inch waterflow detector designed for commercial and industrial fire suppression systems to monitor water movement in sprinkler pipelines. This vane-type detector automatically signals the fire alarm control panel when water flows through 6-inch diameter Schedule 40 steel pipe, triggering an immediate alarm condition with synchronized dual-output relays that control both notification and system response.

Key Features

• 6-inch pipe compatibility for large-diameter sprinkler systems with 450 PSI maximum pressure rating
• Two sets of SPDT (Form C) synchronized switches for reliable alarm signaling and system control
• Rugged NEMA 4-rated enclosure engineered for damage resistance in both indoor and outdoor installations
• Low alarm threshold of 4 to 10 GPM minimizes false alarms from normal system operation

Technical Specifications

• Operating Voltage: 15–32 VDC for addressable system compatibility
• Operating Temperature Range: 32°F to 120°F (0°C to 49°C)
• Contact Ratings: 10 A @ 125/250 VAC and 2.5 A @ 24 VDC
• Standby Current: Less than 250 µA; Alarm Current: 5–7 mA
• Pipe Compatibility: 6-inch steel water pipe, Schedule 40; vertical or horizontal mounting
• Dimensions: 7 × 11.5 × 13.7 inches; Weight: 5.8 pounds
• Humidity Range: 10%–93% non-condensing

Certifications

• UL Listed for fire protection service
• FM Approved for automatic detection and alarm signaling
• NFPA 72 compliant fire alarm system component