Is the spool of the gate valve pure copper Is there any standard What is the standard

Oh, no! Generally, gate valves are only sealed with T of cast iron, that is, copper!

Not necessarily something copper-plated.

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.

There must be this, you can refer to what copper material is inside, there is a corresponding standard! ~~

Copper valves are valves cast in copper, which are industrial parts, and were first developed and manufactured by Ningbo, Zhejiang Province at the earliest time in China. In the early eighties of the twentieth century, Ningbo, Zhejiang Province took the lead in developing the manufacturing process, which changed the historical suspicion of long-term use of cast iron valves in China. In terms of manufacturing process, the sand casting molding process was initially adopted, and in the early nineties, it was changed to a forging process.

By the beginning of the 21st century, China has developed into the world's copper valve manufacturing center. Copper valves are generally brass, rarely bronze. Common brass is a copper-zinc binary alloy.

Due to its good plasticity, it is suitable for the manufacture of plates, bars, wires, pipes, Hongzhen valves and deep-drawn parts, such as condenser pipes, heat pipes and machinery, electrical parts, etc. Brass, with an average copper content of 62% and 59%, can also be cast, known as cast brass.

Knowledge development

Classification of copper valves

1. Copper gate valve: Gate valve refers to the valve in which the closing part (gate) moves in the vertical direction along the axis of the channel, and is mainly used as a cutting medium on the pipeline, that is, it is fully open or fully closed.

2. Copper ball valve: It is evolved from the plug valve, and its opening and closing parts are a ball, which is rotated 90° around the axis of the valve stem to achieve the purpose of opening and closing.

3. Copper globe valve: refers to the valve in which the closing part (disc) moves along the centerline of the valve seat. Depending on this form of disc movement, the change in the seat port is proportional to the disc stroke.

4. Copper check valve: a valve that automatically opens and closes the valve disc by relying on the flow of the medium itself, and is used to prevent the medium from flowing back.

What should I do if the copper valve does not move

The copper valve rust can not be screwed can be done according to the following methods:

1. After rusting, it should not be forcibly tightened, it should be dripped or injected with grease, cleaned for a period of time, and then tightened.

2. If you can't rotate, you can use a brush to gently remove the external rust, or you can use steel balls to remove all the external iron sheets, add some lubricating oil, and try again.

3. If the above two ways can't leave the valve, we can drop some vinegar in a plastic bag, soak it, put it on the valve, wrap it with a damp cloth, and after a day, you can open it.

4. Based on the law of thermal expansion and contraction of objects. After heating the valve body, the valve body expands due to heat. Once the valve body expands, it separates from the rusty spool. In this way, it is easy to turn the valve.

The following are the top ten domestic first-line valve brand manufacturers in 2022-2023, but for reference only: Suzhou Newdust Liquid Wei Valve Co., Ltd., Shanghai Guanlong Valve Machinery, Shanghai Qizhong Valve Manufacturing, Sanhua, Suyan, Shentong, Su Valve, Nanfang, Jiang.

First, the word Yao. The above manufacturers are only estimates and references, and the specific situation may be different 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.

Hello Dear Kiss I'm glad to be able to answer this question for you. <>

Copper core copper rod gate valve refers to which accessories are Bofeng copper: the former is the valve core is copper, the latter is all copper The copper core gate valve is made of copper alloy, and the gate valve of ordinary materials is mostly stainless steel, cast steel, cast iron, etc.; There is also a new type of ceramic gate valve. The performance of gate valves of different materials is different, and there are certain differences in processing technology, service life and applicable occasions.

The copper core gate valve base is mostly used in the water outlet device at the end of the fire fight, and some other occasions with special requirements. Copper core protection gate valve is one of the most commonly used shut-off valves, mainly divided into signal gate valve and ordinary gate valve, it has a wide range of uses, a wide range of industries, suitable for liquid, air, etc., and also has the characteristics of small flow resistance, labor-saving opening and closing, corrosion resistance, etc.

Household valves, especially hot water valves, are indeed more commonly used in copper, mainly because copper is not easy to corrode, and another point is that copper has an antibacterial effect.

Let's go into a little more detail.

In fact, household valves are not made of copper from the beginning, and for a long time, the faucets we can see are mainly cast iron and aluminum alloys, and if you go to some old public toilets now, you may still be able to find some such faucets.

These valves or faucets made of cast iron, or carbon steel, are mainly made of iron, which can easily corrode under the action of water. After corrosion, these faucets or valves will have a situation, that is, there will be a lot of rust in the water, and in serious cases, it will even rust to death, so the valve cannot be opened. However, there was nothing to be done about this in the past, who made our country a country with a lack of copper resources, and steelmaking could only be practiced like this?

Aluminum alloy has also been promoted, but in fact, it is worse to make faucets or something, because the strength is not enough, and it will not be used many times, and it will break, so it is unbearable.

At that time, the plumbing engineers did not know that copper valves were easy to use, but there was no way, the only copper in China could only meet the power demand first. In fact, at that time, the proportion of aluminum wire in the household wire was also surprisingly high, if you are a little older, you should remember that the waste collection in the past, will peel off the wire one by one, to see whether it is aluminum wire or copper wire, as for the wires laid by the public, because they are all good copper, rural areas are often stolen.

Our country can obtain a large amount of copper, in fact, it is a matter of the past 20 years, brass is used in pipeline valves, it is not so luxurious, and the color of copper is relatively good-looking, suitable for household use.

But where we can't see, there are a lot of valves that are actually still made of cast iron, especially those with large sizes, mainly because the cast iron guys are more rammed.

In addition, in recent years, stainless steel and PPR pipe valves have also become popular. In the future household valves, the proportion of PPR material is likely to increase, because copper is not absolutely non-corrosive, copper ions are also harmful to the human body, and PPR density is smaller, processing is easier, corrosion resistance is strong, with more and more mature technology, will become more and more popular.

Summary. The specifications of the copper gate valve correspond to the size of the pipe.

Hello dear, you can compare the above pattern.