Metraflex manufactures engineered piping components to reduce noise and vibration. Metraflex has been supplying piping specialty products to the commercial HVAC industry since 1958. Metraflex makes a variety of engineered piping products including UL listed, FM approved expansion joints (U-loops, V-loops), expansion compensators, wall penetration seals, pipe guides, pump connectors, strainers, valves and more.