Viking VK598 K25.2 Upright Sprinkler 1" NPT Standard Response

The Viking VK598 K25.2 Upright Sprinkler is a specialized fire protection device engineered for dry or preaction sprinkler systems in demanding warehouse environments. Installed directly onto system piping in an upright position, it provides early fire suppression for high-storage settings and tall ceilings, utilizing a large K-factor to deliver efficient water distribution.

This component supports compliance with NFPA 13 by enabling extended spacing up to 10 x 10 feet. This capability helps minimize the need for in-rack sprinklers, simplifying your overall system layout, installation complexity, and ongoing maintenance.

• Corrosion-Resistant Construction: Built with durable materials that withstand harsh warehouse conditions, protecting system resilience against moisture and temperature shifts.
• High-Capacity Water Flow: Features a K-factor of 25.2 to activate swiftly and suppress fires in their initial stages.
• High-Rack Storage Coverage: Engineered for storage heights up to 40 feet and ceiling heights up to 45 feet.
• Wide Commodity Compatibility: Suitable for protecting Class I-III commodities stored via palletized, bin box, solid piled, and open frame rack methods.
• InstaSeal® Technology: Equipped with Viking’s Torque-Assist caps for secure sealing under high pressure and reduced leakage risk.
• Standard 1" NPT Connection: Integrates smoothly into common new or existing fire protection piping layouts.

Verify all local Authority Having Jurisdiction (AHJ) mandates and consult the manufacturer technical data sheets before beginning installation.

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