A sluice gate is a fitting, most commonly used in water treatment, designed to regulate or shut off the flow: emergency, routine shut-off, for repair or maintenance, process shut-off. Large sluice gates, as a rule, have electrical control, while small ones are made with manual control.
There are several main types of sluice gates according to their characteristics:
Emergency sluice gates operate in the Open/Close mode. That is, 100% of the channel or pipeline section is free or blocked.
Process gates have the function of blocking only a part of the channel or pipeline to allow a specified flow rate of water. Process pipelines also include regulating pipelines with a spillway, which are also designed to pass the required amount of water, but the water flow takes place through the spillway of the sluice gate in the upper part.