WFD80EXP SYSTEM SENSOR

Product Overview

 The System Sensor WFD80EXP is an explosion-proof waterflow detector for 8" pipe installations, housed in a NEMA 4-rated cast aluminum enclosure for indoor/outdoor use. It operates from 32°F to 160°F. The spring mechanism is isolated from the explosion environment to preserve sensitivity, and a sealed retard mechanism prevents contamination. Visible switch activation allows easy verification of retard timing, ensuring reliable performance in critical fire protection applications.

Key Features

• Explosion-proof, NEMA 4-rated cast aluminum housing
• Compatible with 8" steel pipes, schedules 10–40
• Operating temperature: 32°F–160°F (0°C–71°C)
• Two SPDT (Form C) synchronized switches in a rugged terminal block
• Isolated spring mechanism protects sensitivity
• Triggering flow: 4–10 GPM; UL pressure: 450 PSI; max surge: 18 FPS
• Conduit entries: Two 1/2" openings
• Contact ratings: 10 A @ 125/250 VAC; 2.5 A @ 24 VDC
• Hazardous location: Class I, II, III, Div 1
• Dimensions: 6"H x 9"L x 6.5"W; Weight: 13.5 lbs