Potter Electric Signal Co. Us VS-SP Waterflow Switch Small Pipe

Product Description

The POTTER ELECTRIC SIGNAL CO. US VS-SP is a vane type waterflow switch designed for use on small pipe fire sprinkler systems. When water flows through the pipe, the internal vane deflects and actuates the switch, signaling the fire alarm control panel that flow is occurring. The VS-SP is built for reliable detection in wet-pipe sprinkler systems and is a standard component in commercial and residential fire protection installations. Licensed fire protection contractors and sprinkler fitters are the primary installers of this device.

The VS-SP is intended for use on small diameter wet-pipe fire sprinkler systems. It is commonly installed in commercial buildings, light industrial facilities, and residential structures where a code-compliant waterflow detection device is required at the riser or branch piping. This switch provides the electrical signal needed to trigger alarm notification or suppression system responses whenever sprinkler flow is detected.

Key Features

• Vane-type flow detection actuates on water movement through the pipe
• Designed for small pipe installations in wet-pipe sprinkler systems
• Outputs an electrical signal to fire alarm control panels upon flow detection
• Sold as a single unit per package

Compatibility

Designed as an OEM-style waterflow switch for small pipe wet-pipe fire sprinkler systems. Verify pipe size and thread specification before installation to confirm fit.

Installation Notes

Installation must be performed by a licensed fire protection contractor or sprinkler fitter in accordance with NFPA 13 and applicable local fire codes. Depressurize and drain the affected sprinkler system section before cutting into pipe or removing any fittings. Verify that the pipe diameter and saddle fitting match the VS-SP requirements before final mounting. The completed installation should be inspected and tested per the authority having jurisdiction prior to returning the system to service.