Selection and performance issues of check valves
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This post was last edited by ds66616 on 2018-11-17 at 10:14. Install check valves in the pipelines where such valves are required. Are there any differences between check valves for liquid media and those for gas media? Can a check valve completely prevent backflow? A question from an outsider – please feel free to advise: handshake
It will definitely act as a check valve. The principle is the same, and most of them are applicable universally. However, when making a choice, it is also necessary to purchase based on the usage conditions. Such as medium, pressure, operating temperature, etc.
As long as the check valve is not faulty, it will definitely fulfill its function. In our actual use, I found that the check valve only prevents large amounts of fluid from flowing back; it does not provide a complete seal, and there is still some leakage. Therefore, special attention must be paid during disassembly
Oh, that’s due to impurities in your medium, or issues with the valves that cause them to not close properly. If check valves are used in critical locations and similar problems occur, they need to be regularly inspected and maintained, depending on their usage conditions.
As long as the valve is reliable, it can prevent backflow of liquids and gases within its normal temperature and pressure operating range. However, the idea of a complete check valve isn’t feasible; a blind flange is still needed for that.
There is no difference between liquid media and gas media; there will definitely be some leakage, but it remains within the standard range.
Check valves do not guarantee 100% prevention of backflow; they only reduce the likelihood of it occurring, and backflow may still happen in some cases. For gas and liquid states, it depends on the actual temperature and the temperature resistance of the material; generally, it’s applicable in most cases