Potter Electric Signal Co. Us VSR-5 Waterflow Switch

Product Description

The POTTER ELECTRIC SIGNAL CO. US VSR-5 is a vane-type waterflow switch designed to detect water movement in wet-pipe fire sprinkler systems. When flow occurs, the paddle vane deflects and actuates an internal switch, sending a signal to a fire alarm control panel or monitoring system. The VSR-5 is built for reliable detection in systems where prompt notification of water movement is critical. Licensed fire alarm and sprinkler system technicians install this device during new construction and retrofit applications where pipe size 5 compatibility is required.

The VSR-5 is used in commercial and residential wet-pipe sprinkler systems. It mounts directly to the sprinkler supply piping and is suited for applications where continuous waterflow monitoring is required by local fire codes. The device is commonly installed by certified fire protection contractors working on NFPA 13 or NFPA 72 governed systems. Its vane-type design accommodates standard pipe installations without the need for complex fitting modifications.

Key Features

• Vane-type paddle mechanism detects water movement inside the pipe without external flow meters
• Designed for wet-pipe fire sprinkler system applications
• Outputs a switch signal compatible with fire alarm control panels and monitoring systems
• Sold as individual unit for single-point installation
• Compact design suited for both new construction and retrofit installs

Compatibility

Designed as an OEM-style waterflow detection device for wet-pipe fire sprinkler piping systems where a vane-type waterflow switch is specified.

Installation Notes

Installation of the VSR-5 should be performed by a licensed fire protection contractor or qualified fire alarm technician in accordance with NFPA 13 and NFPA 72 requirements. Depressurize and drain the affected pipe section before cutting into the sprinkler line. Ensure the vane fits the pipe bore correctly and that all fittings are properly sealed before restoring system pressure. A full system functional test should be conducted after installation to verify alarm signaling.