Principle of 1. differential pressure bypass valve

The differential pressure bypass valve is a flow control device whose working principle is based on the relationship between the pressure and the flow rate of the fluid. The differential pressure bypass valve is mainly composed of valve body, valve clack, spring and other components. When there is a pressure difference between the main pressure and the bypass pressure, the differential pressure bypass valve will automatically open or close according to the set pressure difference value to adjust the fluid flow. When the main road flow is too large and the pressure rises, the bypass valve will open, and part of the fluid will flow away through the bypass pipe, thereby reducing the pressure of the main road; on the contrary, when the main road flow decreases and the pressure decreases, the bypass valve will Close, more fluid flows into the main circuit to maintain the stability of the system.

Application of 2. differential pressure bypass valve

1. Refrigeration system: In the refrigeration system, the differential pressure bypass valve is widely used in cooling water or chilled water pipelines to stabilize the pressure of the system and prevent equipment damage caused by pressure fluctuations.
2. Heating system: In the heating system, the differential pressure bypass valve can balance the pressure difference between the hot water supply and the return water to ensure the normal operation of the system.
3. Air conditioning system: In large air conditioning systems, the differential pressure bypass valve can be used to balance the pressure between the branch pipes to ensure the comfort and energy saving of the air conditioning system.
4. Industrial production: differential pressure bypass valve is also widely used in various industrial production lines, such as chemical, food, pharmaceutical, etc., used to control the flow of fluid medium in the pipeline to ensure the stability of the production process.
5. Fire fighting system: In the fire fighting system, the differential pressure bypass valve can be used to stabilize the pressure of the fire fighting water system to ensure that sufficient fire fighting water can be quickly provided in an emergency.

3. considerations

When using a differential pressure bypass valve, the following points need to be noted:

1. Regularly check the working status of the differential pressure bypass valve to ensure its normal operation.
2. Adjust the setting value of the differential pressure bypass valve according to actual needs to ensure the stability of the system.
3. When installing the differential pressure bypass valve, pay attention to its installation direction to ensure its correct installation.
4. Avoid applying excessive pressure or excessive flow on the differential pressure bypass valve to avoid damage to the valve.

In short, the differential pressure bypass valve is an important flow control device, and its principle and application are extensive. In the process of use, it is necessary to pay attention to its working state and installation direction to ensure its normal operation.