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This post was last edited by liaifeng on 2018-9-3 at 18:17. The high-temperature mixing valve in the sulfur processing unit is crucial for its long-term stable operation; should this valve fail, it will severely impact the proper functioning of the unit. We have been using it for over four years now, and it keeps having minor problems, though these can be managed for now. Yet we are quite worried and wondering whether it needs to be replaced during maintenance. How long can such a valve generally last? Which brands of valves are better?
We have been using valves from Jingmen Refining for many years; of course, there are better valve options available, including those from abroad
There are both domestic and imported ones. Normally, it’s about 3 to 5 years, in my opinion
It is necessary to regularly check the lubrication and maintenance status as well as the cooling systems; the valve stems should be moved extensively on a periodic basis, and they generally last for around 8 years
Could you tell me what the material of the valve core is?
Oh, it’s really great to be able to use it for 8 years
Generally, valve cores with cooling can last 4 years without issue, while those without cooling are likely to fail after around 3 years.
We’ve been using it since October 2014, and there have been no problems. . Zhejiang Petrochemical, water-cooled. During maintenance, the valve core must be replaced, whether it is damaged or not, in order to prepare for the next cycle. Otherwise, if the valve core is damaged, water will leak out, the pipelines will get clogged, and water will also enter the furnace. It’s very troublesome; we’ve encountered this before