The Viking Corporation, a global provider of fire protection and life safety systems, has enhanced the cULus listing for its 5.6 (80) K-factor quick response COIN sprinkler. The new listing allows the VK950 upright sprinkler to protect combustible concealed spaces without the use of draft curtains in most applications, making it an ideal replacement for competitive sprinklers that have more stringent and expensive draft curtain requirements.
The new VK950 UL Listing applies when sprinkler spacing is up to 16' x 16' (4.9 m x 4.9 m) for truss construction with top chord member on face (not on edge) for wet or dry systems. The listing is also applicable when sprinkler spacing is up to 14' x 14' (4.3 m x 4.3 m) for trusses with top chord member on edge or solid wood joists for wet systems.
Installation in corrosive environments
The updated VK950 technical datasheet contains complete design and installation details. The COIN VK950 5.6 K-factor Quick Response Upright is a glass bulb sprinkler with a thread size of ½” NPT (15 mm BSPT) and an intermediate temperature rating of 200°F (93°C).
Available finishes include brass and an ENT coating for installation in corrosive environments.