Install the VK4621 and VK4921 sprinklers with the protective cap in place Viking's new VK4621 and VK4921 5.6 K-factor concealed pendent commercial sprinklers are designed for installation on concealed pipe systems where the appearance of a smooth ceiling is desired. In addition to the new sprinklers, Viking offers a durable and lightweight installation wrench, allowing for installation with the protective cap in place, and minimizing damage to the sprinkler during the process. The tough protective cap is designed to withstand wrenching and resist breaking during installation. Viking also offers a cap removal tool to help you finish the job from the ground. The new sprinklers are available in multiple temperature ratings and finishes, including ENT plating for corrosive environments. The VK4621 is cULus Listed as a quick response sprinkler and FM Approved as a standard response sprinkler. The VK4921is UL Listed and FM Approved as a standard response sprinkler. Viking's new corresponding wrench is available as a plastic installation wrench or a metal heavy duty wrench. The new cap removal tool makes removing the protective cap a breeze. Viking_nfpa.indd 1 10/28/20 10:40 AMhttp://www.vikinggroupinc.com http://www.vikinggroupinc.com