SYSTEM SENSOR WFD20EXP

Product Overview

 The System Sensor WFD20EXP is an explosion-proof waterflow detector for 2" pipe applications. Housed in a NEMA 4-rated cast aluminum enclosure, it operates indoors or outdoors from 32°F to 160°F. Two SPDT (Form C) synchronized switches in a durable terminal block provide reliable signaling. The spring mechanism is isolated from the explosion environment, and a sealed retard mechanism prevents contamination, ensuring consistent operation.

Key Features

• Explosion-proof, NEMA 4-rated cast aluminum housing
• Indoor/outdoor use, 32°F–160°F (0°C–71°C)
• Two SPDT (Form C) synchronized switches
• Isolated spring mechanism protects sensitivity
• UL pressure rating: 450 PSI; maximum surge: 18 FPS
• Triggering flow: 4–10 GPM
• Hazardous location: Class I, II, III, Div 1
• Conduit entries: Two 1/2" openings
• Pipe schedule: 10–40
• Contact ratings: 10 A @ 125/250 VAC; 2.5 A @ 24 VDC