Viking is a proud world leader in the design and manufacturing of life-saving fire sprinklers. The VK3521 Quick Response Pendent Sprinkler is just one of thousands of industry-leading sprinklers available to customers! The VK3521 is a small thermosensitive glass bulb spray sprinkler available with various finishes and temperature ratings to meet design requirements. The special Polyester and Electroless Nickel PTFE (ENT) coatings can be used in decorative applications where colors are desired. In addition, these coatings have been investigated for installation in corrosive environments and are Listed and Approved as indicated in the Approval Chart.Sift through virtually every sprinkler in a flash with the revolutionary Sprinkler Selector! Select various criteria, such as K-factor, occupancy type, orientation, temperature and more, to get the part number you need. Test it out today and streamline your projects! The VK3521 is compatible with revolutionary InstaSeal® technology through the addition of new Torque-Assist caps. Look for the compatibility icon to ensure the correct sprinklers are being ordered for a job requiring InstaSeal technology.
