Preaction Trim Assembly

The Preaction Trim Assembly is a factory pre-assembled package of valves, gauges, solenoids, and piping that surrounds and controls the preaction valve managing water supply pressure, supervisory air pressure, detection circuit connections, manual release, system test, and drain functions within a single integrated assembly. Viking preaction trim assemblies are pre-tested at the factory to ensure correct valve and system functionality before shipment, significantly reducing field installation time and eliminating the risk of assembly errors that could compromise system performance. Each assembly is configured to match the specific preaction valve model and system type single or double interlock and includes all necessary connections for integration with the system control panel and detection devices. Compliant with NFPA 13 and engineered for reliable long-term performance in mission-critical environments.