Potter VSR-SG Vane Type Waterflow Alarm Switch with Retard and Glue-In Union, for CPVC Pipe 1" to 2"

Designed to provide dependable sprinkler monitoring for wet-pipe systems, the Potter Electric Signal VSR-SG vane-type waterflow switch delivers fast, reliable notification of sustained water flow so security and facility teams can act quickly. The VSR-SG is optimized for CPVC pipe installations from 1 to 2 inch and trips at flows of 10 GPM (38 LPM) or greater, giving you consistent detection performance across commercial, industrial, and institutional sites.

An adjustable pneumatic retard (0–90 seconds) minimizes false alarms from transient surges, while the glue-in union and compact footprint simplify installation in confined spaces. Dual SPDT (Form C) contacts allow simultaneous connection to fire alarm control panels and monitoring equipment, supporting both fire protection and security surveillance integrations. Rated for standard conduit entry and dissimilar-voltage wiring, the unit is built for reliable, low-maintenance service.

For building managers, integrators, and security professionals who demand accurate waterflow detection and clean system integration, the Potter VSR-SG is a practical choice. Add it to your fire/security system specification or contact our sales team to discuss deployment in your next project.

• Reliable, early sprinkler event detection that integrates with fire alarm and security monitoring to reduce response times
• Adjustable 0–90 second pneumatic retard to prevent nuisance alarms and ensure only sustained flows trigger alerts
• Glue-in union and compact design for quick, space-saving installation on CPVC pipe (1 to 2 inch)
• Dual SPDT contacts for simultaneous notification and supervision of fire panels, monitoring systems, or auxiliary equipment
• Field-replaceable retard and robust die-cast construction for low-maintenance operation and long service life