1. Pressure Loss
The pressure loss of a back pressure valve must be less than the flow rate within a certain range; otherwise, it will lead to changes in pipeline flow rate, resulting in unstable product quality. When the flow rate increases, the pressure loss ratio needs to remain low, which requires a high-performance back pressure valve.
2. Flow Range
The flow range of the back pressure valve must meet the operational requirements. During the selection process, the flow requirements of the back pressure valve should be determined based on the production process. Generally, the larger the adjustment range of the back pressure valve, the wider its applicable range.
3. Stability
The back pressure valve needs to ensure extremely high control accuracy within the working flow range to prevent product quality instability due to errors or other factors during production.
4. Corrosion Resistance
During use, back pressure valves need to come into contact with various liquids and gases; therefore, a certain degree of corrosion resistance is one of the most important criteria for selection.
5. Material Selection
The selection of materials is also crucial when choosing a back pressure valve. Different media require different materials, and special working environments require materials with special properties.
