Gravity filtration equipment NGF Series

The NGF Series equipment contains double layers of anthracite and sand and its flux is determined by pressure head depending on the water level.
Actually, as water passes through, filter media becomes clogged with turbidity and pressure loss increases. If water surface rises because of pressure loss increase, pressure head also increases, which lead to a constant supply of product water.
When the water surface reaches a certain level, backwash with air and water will automatically start and discharge accumulated turbidity outside of the system.
After completing the back wash, water supply will automatically re-start.