TRIMPAC® Model E-1 & E-1B is a factory assembled trim package for a Firecycle® III or Firecycle® III-OH multi-cycle preaction system in a metal enclosure. The standard trim normally required on a flow control valve has been moved to a single cabinet. TRIMPAC® Model E-1 & E-1B provides access doors for the emergency release (B.1) and alarm test valve (B.7) for manual operation of these trim valves. TRIMPAC® Model E-1 & E-1B is equipped with priming water pressure and water supply gauge view-ports for easy monitoring of water pressures.