Viking VK533 K11.2 Quick Response ELO Upright Fire Sprinkler

The Viking VK533 K11.2 Quick Response ELO Upright Fire Sprinkler is engineered for rapid fire suppression in commercial, industrial, and institutional facilities. Installed in upright orientations within wet, dry, and pre-action fire suppression systems, this component delivers high-capacity water discharge to control fires quickly in demanding environments.

This sprinkler complies with NFPA 13 standards and is rated for hazard occupancies up to and including Ordinary Hazard Group II, as well as high-piled storage occupancies. It satisfies life safety and property protection code requirements while offering potential pipe-sizing benefits in hydraulically calculated systems.

Key Features & Construction

• Extra-Large Orifice (ELO): Features a K-factor of 11.2 to provide greater water flow rates at lower operating pressures.
• Quick Response Operation: Utilizes a thermosensitive fusible link for rapid thermal activation and earlier fire control.
• Durable Body Construction: Built with a high-grade brass frame and deflector designed to resist corrosion in challenging environments.
• Integrated Mechanical Protection: Includes a built-in guard and shield to protect the fusible link from accidental damage during handling and maintenance.
• Upright Deflector Design: Projects water upward in a robust circular spray pattern to cool ceilings and surrounding areas.
• System Versatility: Integrates seamlessly with wet, dry, and pre-action fire sprinkler infrastructures.

Technical Specifications & Compliance Table

Contractors must verify local Authority Having Jurisdiction (AHJ) requirements and consult the manufacturer's technical data sheets for specific temperature ratings, finish options (such as brass, chrome, white, or black PTFE), and spacing guidelines prior to installation.

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