What is a filter nozzle
A filter nozzle is a nozzle with a filtration design by which the media is retained and provides a good distribution of water and air. Use of filter nozzles Filter nozzles can be installed in side pipes or on suspended floors. The nozzle has three main components, a filter for removing media or filling with gravel, a water control orifice, and a tail pipe with an orifice for controlling airflow. The nozzle may rely on the open area of the filter slot to provide controlled head loss for good distribution, or a separate orifice within the assembly is often preferred. The filter slots may be partially clogged with media. This will change the head loss of the slot. If the control orifice is within the nozzle body and the slot has a large open area, a partially clogged slot will have less effect on the head loss through the nozzle. Filter nozzle slot sizes vary widely from approximately 0.2 mm to 10 mm, with larger slots most suitable for upflow filters. Slots of...