Viking VXD PTR Double Interlock Preaction System: Advanced Fire Protection The Viking VXD PTR Double Interlock Preaction System offers an advanced fire suppression solution for critical environments where preventing accidental water discharge is as important as effective fire protection. This Pre-Trimmed Riser (PTR) assembly arrives largely pre-assembled, simplifying installation in sensitive locations like data centers, museums, archives, and cold storage facilities. Double Interlock Configuration: This system requires two independent conditions to be met before water enters the piping: the activation of an electric fire detection system and a drop in supervisory pressure. This dual-activation sequence significantly reduces the risk of accidental water damage to sensitive equipment. If either the detection system alone activates or a sprinkler alone operates, an alarm will sound, but the deluge valve will not open. Electric/Pneumatic Release with EA-1 Electronic Accelerator: Utilizing a Model VXD Deluge Valve controlled by a pneumatic actuator and electric solenoid, the system features the EA-1 Electronic Accelerator. This microprocessor-equipped device monitors air pressure, sampling it twice per second, and can activate the system within seconds of detecting an open sprinkler head for rapid response. The EA-1 can activate the system within four seconds, enhancing speed and efficiency. Monitored Solenoid: The system includes a monitored release solenoid, providing an NFPA 13 compliant solution to ensure the integrity of the release circuit at all times. Corrosion-Resistant Construction: Built with galvanized piping and high-quality components, the system offers enhanced durability and a long service life, even in demanding industrial or commercial environments. Galvanized steel is chosen for its strength, durability, and protective barrier against corrosion, enhancing longevity and reliability. Pre-Trimmed Riser (PTR) Design: The package comes completely assembled with the deluge valve, riser check valve, and necessary trim. Featuring groove/groove connections, the PTR design facilitates easier maintenance and streamlined diagnostics. These pre-assembled riser packages simplify installation by eliminating the need to cut pipes or source and assemble individual parts on-site. Efficient Flow Management: Designed for professional fire suppression networks, the VXD series manages high flow capacities with minimal pressure loss, ensuring dependable performance during a confirmed fire event. By ensuring water is only released when a genuine fire condition is independently verified, the Viking VXD PTR system provides unparalleled peace of mind for facilities housing mission-critical operations. Its robust, galvanized design and advanced electronic monitoring protect against both fire and the costly secondary damage often caused by traditional sprinkler malfunctions. This system is an intelligent choice for enhancing fire protection performance, with faster activation times, precision monitoring, and seamless integration. Specifications: https://www.vikinggroupinc.com/sites/default/files/2026-04/F_041523_09.pdf
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