What type of impellers are capable of passing the largest debris but have lower pressure capabilities?

Open impellers are designed with relatively larger spaces between the blades, allowing them to pass larger debris without clogging. This design minimizes the risk of obstruction when pumping fluids that may contain solid particles or debris, making them particularly suitable for wastewater or irrigation systems where such materials are present. However, due to their structural design, open impellers typically generate lower pressure compared to closed impellers, which have blades that are fully enclosed, allowing them to create higher pressure and move fluids more effectively in applications requiring specific pressure levels. The balance between debris handling and pressure generation is a key characteristic of open impellers, making them ideal in scenarios where debris presence is a concern but high pressure is not as critical.