Non-Clog Type Coarse Bubble Jet Diffuser comes with dimensional accuracy that automatically closes and seals completely when air is turned off. The Jet Diffuser offers efficient performance that will not be clogged by rags in the tank. The Jet Diffuser has an operating head loss of approximately 5-10 inches of water when operated in normal airflow ranges. Non-Clog Type Coarse Bubble Jet Diffuser is easy to operate and can be maintained without any hassles.