Viking VK533 K11.2 Quick Response ELO Fire Sprinkler

The Viking VK533 K11.2 Quick Response ELO Upright Fire Sprinkler is engineered for demanding commercial, industrial, and institutional fire suppression assemblies. Installed upright in wet, dry, or pre-action systems, this heavy-duty sprinkler utilizes an Extra-Large Orifice to deliver high-volume water distribution at lower operating pressures. Its thermal-sensitive fusible link provides rapid activation during heat detection, making it ideal for facilities with high ceilings, open construction, or storage occupancies where fast fire containment prevents structural flashover.

This unit complies fully with NFPA 13 standards for light hazard, ordinary hazard, and storage occupancies. The K11.2 orifice design meets strict hydraulic calculation requirements, allowing contractors to optimize pipe sizing while maintaining code-mandated water delivery densities across commercial and industrial infrastructure.

• Extra-Large Orifice (ELO): Delivers a K-Factor of 11.2 to maximize water flow at reduced operating pressures, minimizing potential liquid damage.
• Quick Response Activation: Houses a highly sensitive fusible link that reacts swiftly to rising temperatures for immediate fire suppression.
• Optimized Upright Deflector: Projects a robust circular spray pattern upward and downward to cool ceiling assemblies and suppress active flames.
• System Versatility: Integrates seamlessly with standard wet pipe, dry pipe, and pre-action fire suppression configurations.
• Robust Build Quality: Constructed with specialized protective coatings and high-grade materials to withstand corrosive industrial and commercial atmospheres.

Contractors and facility managers must verify all local Authority Having Jurisdiction (AHJ) requirements and consult the manufacturer's technical data sheets for specific thread dimensions, temperature ratings, and spacing rules prior to installation.

Documentation: Download Manufacturer Technical Data & Cut Sheet (PDF)