Potter Flame Sensor Parts

Overview

The Potter Electric Signal Co. US VSR-3 is a vane-type water flow switch designed for wet-pipe fire sprinkler systems. It detects water movement in the main riser or branch piping and sends a signal to the fire alarm control panel when flow is initiated. The VSR-3 is engineered for 3-inch pipe and is a standard component in commercial and residential fire protection installations. Licensed fire alarm and sprinkler contractors install this device as part of a listed fire alarm system. Its paddle mechanism responds to flow and actuates a set of contacts to trigger alarms or suppression responses. The VSR-3 fits into 3-inch schedule pipe used in wet-pipe automatic sprinkler systems. It is widely installed in commercial buildings, light industrial facilities, and multi-family residential structures wherever a waterflow initiating device is required on a 3-inch riser or distribution main. The switch integrates with fire alarm control panels to provide early notification of sprinkler activation or unwanted water flow events. Key Features Vane-type paddle mechanism detects water flow in wet-pipe sprinkler piping Sized for 3-inch nominal pipe installations Provides initiating device signal output compatible with standard fire alarm control panels Designed for straightforward saddle or tee installation on sprinkler risers and mains Sold as an individual unit for single-point flow detection Compatibility Designed as an OEM-style waterflow initiating device for 3-inch wet-pipe fire…