Viking VXD Double Interlock Preaction Fire Protection System – Electric/Pneumatic Release

The Viking VXD Double Interlock Preaction System is a cutting-edge fire protection solution specifically engineered for sensitive environments where accidental water discharge could lead to significant damage. This robust system employs both electric and pneumatic release mechanisms, providing a highly monitored and secure method for safeguarding critical assets. It is an ideal choice for facilities such as data centers, museums, archival vaults, and freezer warehouses, where preventing inadvertent water release is of utmost importance.

• Double Interlocked Design: This system uniquely requires two independent events to occur simultaneously before water is released into the sprinkler piping. These events are an electrical detection signal from a fire alarm control panel and a loss of air pressure within the sprinkler piping (indicating a sprinkler head has opened), significantly reducing the risk of accidental discharge.
• Electric/Pneumatic Release: Engineered for precise control, the system activates only when both the electric detection system confirms a fire hazard and a sprinkler head has activated due to heat.
• Comprehensive Monitoring: Features a monitored solenoid, essential for NFPA 13 compliance, providing enhanced oversight of the system's operational status and ensuring long-term reliability. It includes multiple pressure gauges and emergency release valves for easy system status tracking and rapid manual intervention.
• Durable Construction: Built with high-strength ductile iron and precision-engineered components, this system ensures superior corrosion resistance and dependable performance in demanding commercial and industrial conditions.
• Certified Performance: This system is UL Listed and FM Approved, ensuring it meets the most rigorous industry safety and performance standards. It is FM Approved as a refrigerated area system.
• System Compatibility: Integrates seamlessly with a wide range of preaction and deluge fire suppression setups, supporting various control panels and pneumatic detection devices.
• Adherence to Standards: Manufactured to meet NFPA 13 (Standard for the Installation of Sprinkler Systems) and NFPA 72 (National Fire Alarm and Signaling Code) requirements, assuring compliance with national fire protection codes for installation, testing, and operation.

By requiring dual verification before activation, the Viking VXD system minimizes the potential for costly water damage from false activations. The supervisory air pressure within the pipes allows for constant monitoring of pipe integrity, providing an early warning of potential leaks without the risk of water discharge. Whether protecting sensitive equipment in data centers or valuable collections in museums, this system delivers the swift activation and precise control needed to mitigate fire hazards effectively, offering unparalleled peace of mind for valuable infrastructure.

Specifications: https://www.vikinggroupinc.com/sites/default/files/2026-05/052020_04.pdf