Tyco Fire & Building Products has announced a new electronic accelerator for its dry pipe systems. Developed in a joint effort with Potter Electronics, the accelerator consists of a modified pressure switch and control panel. It has been listed and approved for use with the existing Tyco DPV-1 dry pipe valve by Underwriters Laboratories and Factory Mutual. The new accelerator is being sold as a packaged unit and includes the required panel and trim for Tyco's dry pipe valves. Tyco Fire & Building Products.