Our DSF Series™ drum screen filters follows the simple, robust and time-tested principles of drum screen filter operation. Pentair Aquatic Eco-Systems offers a wide range of models, sizes and micron ratings to meet the needs of nearly any aquaculture application. PC models are installed directly into a concrete water channel. CE models offer integrated tanks and inlet/outlet ports for connecting directly to pipes. Hybrid models with pipe inlet ports and channel outlets feature an inlet port for connecting directly to pipes, while water leaves the filter by pouring into a channel.