Viking VK166 Large Orifice Dry Pendent Fire Sprinkler Standard Response

The Viking VK166 Large Orifice Dry Pendent Fire Sprinkler provides reliable fire protection in commercial and industrial environments exposed to freezing temperatures and moisture. It installs primarily in dry pipe and pre-action fire suppression assemblies protecting unheated spaces such as warehouses, cold storage units, and parking garages. The assembly functions by keeping water back out of the drop nipple until system activation, completely eliminating the freeze-induced failures that commonly compromise standard wet systems.

This unit satisfies strict life safety parameters governed by NFPA 13 standards for installation in freeze-prone areas. Its standard response technology and calibrated large-orifice K-factor deliver high-capacity water discharge for rapid fire suppression during early response scenarios.

Key Features & Construction

• Dry Pendent Design: Prevents water accumulation in the drop nipple to eliminate freezing and system malfunction risks in cold environments.
• Large Orifice K-Factor: Features enhanced water flow capacity with an 18 K-factor for rapid, high-volume fire suppression.
• Corrosion-Resistant Construction: Built from durable, high-grade metals (including available brass, chrome, white, and ENT/Nickel PTFE options) to withstand harsh conditions and extend service life.
• Standard Response Element: Balances sensitivity and reliability to activate promptly without false alarms using available 155°F, 200°F, or 286°F temperature ratings.

Technical Specifications & Compliance

Contractors must verify local Authority Having Jurisdiction (AHJ) requirements, system compatibility, and specific temperature/length dimensions prior to rough-in and installation.

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