Technology Screen Type Automatic Filtration degree 50-500 micron Flow rate up to 280 m³/h (1,233 gpm) The Sigma Pro is a multi-screen, polymeric filter that combines Amiad’s unique suction-scanning screen technology with a compact design and is controlled by the new generation, advanced ADI-P controller. Designed to handle low pressures, the Sigma Pro is also modular, offering various installation configurations. The Sigma Pro is an easy to install filter for irrigation systems requiring minimal maintenance with high reliability and durability. It requires low water and energy consumption with a compact design and small footprint. Available models: Sigma Pro 4", Sigma Pro 6", Sigma Pro 8"