Potter Electric Signal Co. Us VSR-2.5 Vane Flow Switch

Product Description

The POTTER ELECTRIC SIGNAL CO. US VSR-2.5 is a vane type waterflow switch designed for installation in 2.5-inch water supply piping used in fire protection and sprinkler systems. When water flows through the pipe, the internal paddle vane deflects and actuates an electrical switch, signaling flow to a fire alarm control panel or monitoring system. This device is a core component in wet-pipe sprinkler systems, providing reliable detection of waterflow events. Installation is performed by licensed fire protection contractors or qualified plumbing and mechanical technicians working to applicable codes.

The VSR-2.5 is used in commercial and residential fire suppression systems where 2.5-inch wet-pipe sprinkler mains are present. It is typically installed in horizontal or vertical pipe runs and wired into a fire alarm control panel to initiate alarm signals upon sprinkler activation or pipe flow. This switch is categorized under waterflow equipment and is sold as an individual unit.

Key Features

• Vane-actuated paddle design responds to waterflow in 2.5-inch pipe
• Generates an electrical signal upon flow detection for integration with fire alarm panels
• Designed for wet-pipe fire sprinkler system applications
• Sold as a single unit for straightforward replacement or new installation

Compatibility

Designed as an OEM-style waterflow switch for use in wet-pipe fire sprinkler systems with 2.5-inch piping. Consult system documentation and local fire code requirements to confirm fitment before installation.

Installation Notes

Installation should be performed by a licensed fire protection contractor or qualified technician in accordance with NFPA 13 and local authority having jurisdiction requirements. Shut down and drain the affected sprinkler system branch before cutting into the pipe for saddle or tee installation. Wiring connections to the fire alarm control panel must comply with NFPA 72 and applicable NEC low-voltage wiring requirements. Do not install in pressurized or active pipe without completing the required system isolation and impairment notification procedures.