Potter VSR-ST Vane Type Waterflow Alarm Switch with Retard and Union

Protect assets and people with fast, reliable sprinkler monitoring using the Potter Electric Signal VSR-ST vane-type waterflow alarm switch. Engineered to detect sustained water flow in wet pipe sprinkler systems, this waterflow control provides dependable alarm initiation for fire alarm and monitoring panels. The VSR-ST (Manufacturer Part Number VSR-ST) features a precision vane sensor for quick response and a built-in retard to prevent nuisance trips from transient pressure surges. A union connection streamlines installation and maintenance, reducing labor time during retrofits or routine servicing. Made in the US, the unit meets the expectations of building owners and fire professionals seeking durable, code-conscious components. Because it integrates easily with security, surveillance and fire alarm systems, the VSR-ST is ideal for commercial, industrial and institutional applications where continuous monitoring and quick incident response are critical. Specify the Potter VSR-ST when you need a low-maintenance, high-performance waterflow alarm switch—contact your distributor or add it to your system design for reliable fire protection.

• Ensures dependable sprinkler monitoring with a vane-type waterflow element for fast, accurate detection.
• Built-in retard reduces nuisance alarms from transient water surges, minimizing downtime and service calls.
• Union connection simplifies installation and replacement, cutting labor time and installation costs.
• US-made Potter Electric Signal quality with part number VSR-ST for reliable long-term performance and code compliance.
• Designed for easy integration with fire alarm control panels and security/monitoring systems to support comprehensive protection.