Potter VSR-F-EX-8 Explosion Proof Vane Type Waterflow Alarm Switch with Retard

Designed for reliable wet-sprinkler monitoring in hazardous areas, the Potter Electric Signal, LLC VSR-F-EX-8 vane type waterflow alarm switch delivers dependable waterflow detection and simplified system integration. Built specifically for HazLoc applications, this explosion-proof vane switch trips at flows of 10 gallons per minute or more and uses an adjustable 0–90 second pneumatic retard to prevent nuisance alarms from transient pressure changes. The unit includes two SPDT snap-action switches to support independent supervision and alarm outputs for security, fire monitoring, and building management systems.

Housed in a NEMA 4 / IP66 solid metal enclosure with a non-corrosive saddle bushing, the VSR-F-EX-8 resists environmental exposure and is field-serviceable to minimize service time. Its instantly recycling retard and field-replaceable components make maintenance straightforward, reducing downtime for critical infrastructure. Ideal for industrial sites, data centers, and facilities with demanding surveillance and security requirements, this waterflow control device helps ensure rapid, accurate notification of sprinkler activation. Specify the Potter VSR-F-EX-8 for robust, code-compliant sprinkler monitoring — contact your supplier or request a datasheet to order.

• Explosion-proof detection for hazardous locations that protects wet-sprinkler systems and critical assets
• Adjustable 0–90 second pneumatic retard to reduce false alarms and improve monitoring accuracy
• Trip at flows ≥10 GPM for dependable activation when an actual waterflow event occurs
• Two SPDT (single pole, double throw) contacts for independent supervision, alarm signaling or integration with security/monitoring systems
• Rugged NEMA 4 / IP66 metal enclosure and non-corrosive saddle bushing for long-term reliability in harsh environments