Functional description of current limiting check valve

Limiting check valve function description:

The flow restriction check valve is installed at the outlet of the pump. When the single pump is started and the working pump is not fully designed, it restricts the flow of the working pump and makes the pump work under higher efficiency; it prevents the motor from low lift and large flow in the pump. Inefficient. The phenomenon of overload occurs; it prevents the occurrence of over-rated current burning, and at the same time it has a certain energy-saving effect.

The principle of current limitation is: according to the design condition of the pump, the pilot valve automatically detects and controls the actual working head of the pump. To limit the operating flow of the pump, limit the motor load.

The current limit check valve sets a control working head. When the pump head is lower than the control head, the valve acts as a valve closing action to increase the actual working head; when the pump head is greater than the set head, the valve is fully opened and the valve resistance is extremely high. small.

The setting of the control head can be set according to the rated current of the motor, or it can be set according to the high-efficiency working condition. The set value of the head of the valve is adjustable. The general factory setting is the design condition head.