Viking Freedom® Residential Concealed Pendent Lead Free* Sprinkler VK4880 is a small high-sensitivity solder link and lever residential sprinkler designed for installation on concealed pipe systems where the appearance of a smooth ceiling is desired.  * Lead content complies with the definition of ‘Lead Free’ established in the Reduction of Lead in Drinking Water Act (S.3874) endorsed by AWWA’s Water Utility Council, and California Assembly Bill #1953.