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Viking Adds FM Approval to K17 ESFR Dry Pendent Sprinkler

Friday, January 30, 2015


Hastings, Michigan, USA - Viking Corporation, a global leader in fire protection and life safety systems, announces that its Model VK504 ESFR dry-type sprinkler is now FM Approved for storage applications. The sprinkler's new FM Approval is in addition to its existing cULus Listing. The VK504 sprinkler, which must be installed in a wet pipe system, is UL Listed and FM Approved to protect the same commodities and storage arrangements as Viking's standard K17 ESFR pendent sprinkler (Model VK503).

Viking first pioneered "dry barrel" ESFR sprinkler technology in 2008 with the release of its K14 model (VK502). Viking's dry ESFR sprinklers are intended for freezers and cold storage facilities where a wet- pipe sprinkler system is installed in a conditioned space above an insulated ceiling, often referred to as "box-in-box" construction. In these applications, Viking's dry ESFR sprinklers enable ceiling-only protection, without the use of in-rack sprinklers and preaction systems. By eliminating the need for in-rack sprinklers, the new VK504 allows for lower installation costs, greater racking flexibility, better protection from potential damage, and reduced service and maintenance costs which results in a significantly more cost-effective fire protection system overall.

The Model VK504 has a K factor of 16.8 (242) and is offered in 165°F (74°C) and 205°F (96°C) temperature ratings. The sprinkler is available with either a grooved or threaded 1-inch connection and can be ordered in 18, 24, 30, and 36 inch lengths (470, 622, 775, and 953 mm).


Viking is a global leader in the manufacture and distribution of innovative fire protection and life safety systems. For over 90 years the company’s products and services have protected lives and property worldwide from the devastating effects of fire. For more information on Viking’s complete line of quality fire protection products and services, please visit or call 800-968-9501.