Overview
The Viking™ VK794 C-1 Window Sprinkler (Part Number 01324BA) is a heavy-duty, open-type sprinkler designed for deluge fire protection systems. It provides reliable protection for windows, walls, and roofs that may be exposed to flames or radiant heat from nearby fires. When the system activates, the VK794 releases a wide, fan-shaped spray of water that forms a continuous curtain, helping to stop fire from spreading through glass or other openings.
Made from strong, corrosion-resistant brass, the VK794 is built for long-term performance in challenging environments. It features a 1/2-inch NPT connection and a 1/2-inch orifice with a 5.8K discharge factor, providing higher flow than smaller models. This increased capacity makes it ideal for larger window systems and wide exposure areas that require strong, even water coverage to reduce heat transmission.
Product Overview
The VK794 C-1 produces a 180-degree fan-shaped spray pattern designed to spread water evenly along a wall or window surface. This steady curtain of water helps cool glass, metal, or other materials that could be damaged by heat or flames. By blocking radiant energy and cooling exposed surfaces, the VK794 reduces the risk of fire spreading between structures or through unprotected building openings.
The sprinkler performs effectively with a minimum operating pressure of 7 psi and can handle up to 175 psi of water pressure. The precision-engineered brass deflector ensures a uniform spray that maintains its pattern even under variable flow conditions. The strong construction and simple design make it a dependable choice for both industrial and commercial fire protection systems where dependable coverage is essential.
In deluge systems, multiple VK794 sprinklers are typically spaced side by side so their spray patterns overlap slightly. This overlapping flow forms a complete wall of water across the protected area, helping to stop flames and radiant heat from reaching the building interior. The VK794 is a reliable solution for protecting façades, manufacturing areas, or process equipment where exposure protection is critical.
Listings and Approvals
The Viking™ VK794 C-1 Window Sprinkler is UL Listed for use in fixed fire protection systems. This certification confirms that the sprinkler has been tested and approved for safety, durability, and reliable performance under fire conditions. Although not FM Approved, the VK794 meets the same quality standards used throughout Viking’s C-1 Window Sprinkler line and is suitable for a wide range of deluge system designs.
Each unit is tested for consistent water flow, strength, and spray distribution to ensure reliable operation in critical applications. Installers should always follow Viking’s official technical data sheets and applicable fire protection codes to ensure proper system performance.
Installation and Maintenance
The VK794 must be installed exactly as shown in the system design drawings. The sprinkler’s deflector should be positioned to project a smooth, even 180-degree spray pattern across the protected window or wall. Only the manufacturer’s approved wrench should be used during installation, and proper torque should be applied to prevent leaks or damage to threads. Keep the sprinkler’s waterway clean during installation, and remove any temporary caps or protective covers before system testing.
Once installed, the sprinkler should be inspected regularly to ensure reliable performance. Check that the deflector and orifice remain free from dirt, corrosion, or paint, and make sure no obstructions block the spray pattern. If a sprinkler is found to be damaged or corroded, it should be replaced immediately. Routine inspections and system tests should be carried out in line with NFPA 25 or local requirements to maintain system readiness.
With its solid brass construction, high 5.8K discharge rating, and wide 180-degree spray pattern, the Viking™ VK794 C-1 Window Sprinkler delivers dependable protection for large windows and exterior walls. Its strength, simplicity, and proven performance make it a trusted option for deluge systems that require powerful water flow and consistent exposure control.
