Principle: The water pressure at both ends of the water collector and the water distributor is sensed by the differential pressure controller, and then the difference value is calculated according to the tested pressure, and then the differential pressure controller is used to carry out the calculation according to the calculated difference value and the preset value. The comparison determines the output method to control whether the valve is to increase or decrease the opening, so as to adjust the water volume to achieve the purpose of balancing the water pressure of the host system.
Function: A valve installed on the bypass pipe of the inlet valve pipe section to fill with water to balance the water pressure before and after the inlet valve.
Application: When considering which type of valve is suitable for installation in the bypass pipeline, the first thing to consider is the function of the bypass pipeline. What is the purpose of installing bypass pipes? Bypass pipes can be roughly divided into two categories.
1. The bypass pipeline is used as a backup pipeline. Its function is to isolate the equipment such as pressure reducing valves and steam traps when they are damaged or need to be replaced and repaired, or to close the main pipeline and open the bypass pipeline to allow the equipment to continue. run.
2. The bypass pipeline is used as a supplement to the performance of the pressure reducing valve and the steam trap.
Different purposes require valves with different functions. Therefore, the optimal valve type is also different.