www.pmmag.com/articles/91518-frozen-pipe-protection
Frozen Pipe Protection
March 1, 2008
HotLine is a safe, low–voltage water and sewer pipe freeze protection device with no electrical shock danger. Its heating element consists of a modern alloy and insulated resistance wire encased in a copper or plastic tube for protection. The conductivity of the tube delivers the heat directly into the water or sewer line where it is needed. Operates at a voltage of 6 to 30 volts, AC, depending upon the length of the selected heating element.
Circle 48
Links
