Issue with the small connection pipes on both sides of the pneumatic valve
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This post was last edited by qiushuiweihan on 2017-10-12 at 20:45. As shown in the diagram, a pneumatic valve is installed on a DN300 drainage pipe, with DN25 pipes connecting both sides of the pneumatic valve. What is the purpose of these DN25 pipes?
Balance the pressure line of the pipeline to reduce the pressure difference on both sides of the pneumatic valve, allowing the valve to open first; then adjust it and close the pressure balance line.
Balance the pressure difference before and after the pneumatic valve to protect its function
Is it to make it easier to open the pneumatic valve? If it’s a manual valve, can it also be set up this way, and does one also need to close the pressure balance line? There are no valves on this DN25 pipeline. Are there any standard requirements regarding this?
Balance the pipeline to reduce the pressure difference between the inlet and outlet of the pneumatic valve, thereby facilitating its smooth opening
It’s that the purpose of the pipeline varies depending on its use; it’s still suitable for circulating water or heat transfer oil
This line serves to balance the pressure before and after the control valve. When the valve is closed, the pressure at the front end is high while the pressure at the rear end is low or non-existent, resulting in a large pressure difference. Whether it is a automatic valve or a manual valve, the opening resistance is relatively high. Once this line is connected, pressurizing the area behind the valve in advance reduces the pressure difference, making it easier for the valve to open.
Can this pressure balance line be made without valves?