High-quality bronze switch valve with 1/2" female thread for connecting one or two pre-filters to a common supply line. Installing a switch valve offers a major advantage: when changing a filter cartridge or carrying out maintenance, you can simply switch to the second filter and continue operating without interruption. Thanks to its robust, high-quality bronze construction, the valve is suitable for use with both diesel and petrol. For connecting fuel hoses, hose fittings with a 1/2" male thread are required (available separately). To ensure leak-proof connections, we recommend using appropriate sealing materials.