Spirotherm has introduced the new Spirovent and Spirotrap High Velocity air, dirt, and air/dirt eliminators. The only air and dirt eliminators developed especially for large volume fluid systems, such as central plants and district heating/cooling, the Spirovent and Spirotrap High Velocity models feature the patented Spirotube coalescing/barrier medium. Available in sizes through 36" pipe, and flows exceeding 30,000 gpm, the High Velocity series is unique in design and application. Call (800) 323-5264. Spirotherm.