The Spirotech Spirotrap MB3 22mm Dirt Separator removes all types of dirt, debris and sludge in your central heating system. The presence of dirt in the system will have a negative effect on the system performance and efficiency. Any debris in the system can restrict the flow of water flowing through the pipes resulting in radiators developing cold spots and overall heat output is lowered. Without fitting a magnetic filter preventing build of sludge and debris, your system will eventually require a powerflush, which requires an engineer to pump chemicals though the pipes, boiler and radiators to remove all sludge, rust and limescale. This is at a cost. Therefore, the spirotech magnetic filter is key in sustaining a long boiler life. A spirotech filter is fitted on the return pipe before the system water returns into the boiler. This filter can be fitted horizontally, vertically or even diagonally. The spirotech is quick and easy to clean. You simply pull down the clean external magnet, open the drain valve and dirt collected in the spirotrap runs into a collection bucket.