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Here are some of the well-known brands recognized in the valve industry, which are widely recognized and have a high reputation. While rankings may vary depending on time and market conditions, the following brands are generally considered to be among the top brands in the valve industry:
The following influential first-line brands of water system valves and industrial valves can be used as a reference, but for reference only: Suzhou Neway Valve, Shanghai Guanlong Valve, Shanghai Qizhong Valve, Sanhua, Su Yan, Shentong, Su Valve, Nanfang, Jiang.
First, the word Yao. The above manufacturers are only estimates and references, and the specific situation may vary or fluctuate at any time due to changes in a series of factors such as changes in the market, the size of the competition pattern, and the stability of product quality. As an indispensable key device in industrial production and civil facilities, the quality and reputation of the valve brand directly affect the satisfaction and trust of users.
These brands are known in the valve industry for their innovative technology, high-quality products and reliability. It is important to note that the market and industry are evolving rapidly, and different rankings may vary depending on time and region. For the most up-to-date ranking information, it is recommended to refer to industry reports, professional organizations or market research data for more detailed and accurate information.
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1. You can use a wrench to send the gland screw of the valve stem;
2. Apply some butter to the screw of the valve stem to increase lubrication.
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Find a pipe wrench and twist it back and forth a few more times, if it is too tight, it can only be replaced.
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Is the main valve tight, it is more normal If it is often used particularly tight, it is recommended to change it to a special valve for gas that is too tight and really tired to change a special gas valve for Jinde or Rifeng.
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The ball valve is too tight, I don't know how tight it is, but you say so, there are two possibilities, one is that the sealing effect of the design is good, the requirement is that the tighter the seal, the better, and the other may be that the PTFE ring inside is broken, and the sealing ring is squeezed every time the switch is squeezed, however, as long as one side of the seal on both sides is good, the break will not be, that is, if it is the second situation, the valve will leak and be closed tightly.
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It won't break, but the valve is easy to loosen in the long run, which may lead to air leakage.
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Do you have a ** or something over there, how can I reply to you with just such a sentence.
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Is it that the cylinder is small, is there a **?
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It's loose. It's still tight! It is better to have moderate tightness, because it is too tight and laborious, and it is easy to wear.
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It doesn't matter if it's tight, as long as it doesn't leak.
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Hello, the ball valve switch torque is too large, it may be related to the packing pressure is too tight, you can loosen the packing bolt without pressure and ensure safety, and see if the torque is reduced. If it becomes smaller, be sure to do a shell test before use to confirm that there is no leakage in the packing area under double pressure.
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Put some oil in the middle of the stem and try it. If that doesn't work, change to a ball valve. Or take apart the middle part of the ball valve to see if there is any dirt stuck.
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This iron-fitting, ball valve, PPR double slipknot ball valve is used on PPR pipes.
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Do not borrow the buckle of the original union, cut it at the pipe and buy it according to the thickness of the pipe.
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The larger ones can be turned a few more times with water tape to fill the gaps. You can try.
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