Spirotech UE022WJ Magnetic and Non Magnetic Dirt Seperator Filter In untreated systems, dirt can accumulate in multiple places throughout the system. Studies and practical experience show that magnetite in particular, leads to greatly reduced energy efficiency and therefore higher energy costs. Ensuring quick and efficient dirt removal is essential. Spirotech offers an extensive range of SpiroTrap dirt separators from small brass solutions to heavy duty steel units, especially designed for the removal of dirt. Unique internal spirotube 20 year spirolife guarantee Rotating fitting mechanism External removable magnet.