1. It is installed in the pipe, the best position is the upright installation, but not upside down.
2. If there need to install supporting flange, the suggestion is to install special flange of butterfly valve, that is to say socket welding steel flanges HGJ54-91.
3. After the stem has been installed and used, check the use effect regularly. And if find trouble, eliminate it in time
4. The products of metal sealing butterfly valve are not suitable for installation at the end of the pipeline. If it must be installed at the end of the pipeline, the valve need to be fitted with export flange to prevent backlog and excessive of sealing ring.
5. In use need to adjust the flow, which is controlled by worm gear.
6. The butterfly valves that open and close many times, after being used for two months or so, need to be checked whether the butter is normal with opening the worm gear cover. It should maintain the right amount of butter.
7. Check the connecting parts required compaction. That is to ensure the sealing of the packing, but also to ensure flexible rotation of the stem
8. Verify whether the product performance and direction arrow of medium meet the working condition before installation and clean the valve cavity. It is required that the foreign matter and impurities are not allowed to attach seal ring and disc. And it is also not allowed to close the disc before cleaning the valve cavity in case to damage the sealing ring.
The above are the common faults and correct elimination methods of common pneumatic butterfly valve, hope it can help you.