The Potter Electric Signal VSR-3.5 flow switch is a critical component in comprehensive water-based fire protection systems, engineered to detect water movement within sprinkler pipelines and provide reliable activation signals for fire alarm control panels. Designed for commercial and industrial applications, this precision-engineered 3.5-inch flow switch serves as a crucial interface between hydraulic water systems and electronic notification infrastructure.
Constructed with durability and reliability in mind, the VSR-3.5 is specifically optimized for detecting water flow velocities in sprinkler network configurations. When water movement exceeds predetermined thresholds, the switch immediately generates an alarm signal, enabling rapid response and integration with addressable fire alarm panels across multiple commercial environments including office complexes, healthcare facilities, educational institutions, and industrial manufacturing spaces.
Life Safety’s Potter Electric Signal VSR-3.5 represents advanced flow detection technology, providing fire protection professionals with a robust solution for monitoring water-based suppression systems with exceptional precision and consistent performance.
Key Features
- Precision-engineered 3.5-inch design compatible with standard commercial sprinkler pipe configurations
- Robust mechanical switch mechanism with high-sensitivity water flow detection capabilities
- UL Listed and meets NFPA 72 National Fire Alarm and Signaling Code requirements
- Suitable for wet, dry, and pre-action sprinkler system installations
- Corrosion-resistant construction with durable materials for extended operational lifespan
- Compatible with most major fire alarm control panel manufacturers and addressable systems
Specifications
- Switch Type: Mechanical flow detector
- Pipe Size Compatibility: 3.5-inch nominal pipe diameter
- Environmental Rating: Indoor/wet location rated
- Certifications: UL Listed, FM Approved
- Operating Temperature Range: 32°F to 120°F
Professional fire alarm installers and facility managers rely on the VSR-3.5’s consistent performance across diverse commercial and industrial environments. Whether integrating with new construction fire protection systems or conducting retrofit upgrades, this flow switch provides reliable water movement detection that meets stringent safety standards.
For more information, contact the Life Safety Consultants team at (888) 557-0558, or email us at: sales@lifesafetycom.com
Additional information
| Weight | 8.12 lbs |
|---|---|
| Dimensions | 3 × 5.6 × 5.3 in |
| Condition | New |
| Manufacturers | Potter |
| Part Type | Replacement Part |







