This product is now obsolete. It has no direct Viking™ replacement.
Overview
The Viking™ VK790 C-1 Window Sprinkler (Part Number 01320BA) is an open-type sprinkler made for use in deluge fire protection systems. It helps protect windows, walls, and roofs from fire that could spread from nearby buildings or equipment. When the system activates, this sprinkler releases a wide, fan-shaped sheet of water that forms a curtain to block heat and flames.
Built from strong, corrosion-resistant brass, the VK790 is designed to last in tough environments. It connects easily with a 1/2-inch NPT thread and has a 1/4-inch orifice that creates a smooth, even water flow. With a 1.5K rating, it provides steady performance at both low and high pressures. This sprinkler is ideal for areas that need dependable water coverage as soon as the deluge system is triggered.
Product Overview
The VK790 C-1 creates a 180-degree fan-shaped spray that spreads water evenly across the surface of a window or wall. This helps cool the glass and stop flames or heat from reaching the inside of a building. The steady sheet of water acts like a shield, keeping fire from moving through open or unprotected areas.
The sprinkler is made to handle up to 175 psi of water pressure and works properly with as little as 7 psi. Its solid brass body and deflector keep the spray steady, even in hot or demanding conditions. The VK790 can be used indoors or outdoors to protect windows, building sides, loading areas, or other exposed openings.
To work correctly, these sprinklers should be spaced and aimed so the water sheets overlap, creating a full wall of protection. When the deluge system is activated, every sprinkler opens together to quickly cool the area and help stop the fire from spreading.
Listings and Approvals
The Viking™ VK790 C-1 Window Sprinkler is UL Listed and FM Approved for use in fixed fire protection systems. These approvals show that the sprinkler meets strict safety and performance standards. It can be installed in systems designed under approved fire protection guidelines and standards.
Each sprinkler is tested to make sure it performs reliably under real-world fire and pressure conditions. Always follow the manufacturer’s instructions and local codes when choosing and installing this sprinkler.
Installation and Maintenance
The VK790 should be installed exactly as shown in the system drawings so that the spray covers the window or wall evenly. Use only the proper wrench and tighten to the recommended torque to avoid leaks or damage. Keep the inside of the sprinkler clean and remove all protective covers before testing.
After installation, include the sprinkler in regular inspections. Make sure the openings are not blocked and that the deflector is clean, secure, and pointed in the right direction. If any sprinkler shows signs of corrosion, damage, or blockage, it should be replaced immediately.
When installed and maintained properly, the Viking™ VK790 C-1 Window Sprinkler provides dependable protection for windows and walls that could be exposed to fire. Its strong brass construction, easy installation, and reliable spray pattern make it a trusted choice for buildings that need fast and effective water coverage during a fire.
