There is a kind of regulating valve called hard seal butterfly valve, which is specially used for conveying systems of cold and hot air, steam, natural gas and gas. Its main function is to adjust and cut off the flow of fluid substances, so as to better control the whole system. As we all know, we must be careful about the transportation of natural gas, gas, etc. , no leakage will occur. This means that we must be very careful when choosing pipeline materials. Hard seal butterfly valve is a control button in the pipeline system, and the pipeline can be closed or opened by rotating the valve shaft. Quality is an important factor in choosing hard seal butterfly valve manufacturers. Bian Xiao recommended several good manufacturers for everyone.

? Introduction of hard seal butterfly valve manufacturers.

Hard seal butterfly valve manufacturer: Shanghai Dongbao Valve Manufacturing Co., Ltd.

Shanghai Qingpu Industrial Park is a very famous gathering place for machinery manufacturers, among which Shanghai Dongbao Valve Manufacturing Co., Ltd. is a manufacturer in hard seal butterfly valve. Dongbao is located in Shanghai, which is at the forefront of science and technology, and has obtained a large number of scientific and technological talents and production technology. It has never relaxed its vigilance against hard seal butterfly valve's research and production, and has been committed to absorbing advanced technologies at home and abroad, independently researching and developing high and new technologies, creating a number of patents and occupying a very large industry advantage.

Hard seal butterfly valve manufacturer: Changjiang Hydraulic Machinery Co., Ltd.

This is a manufacturer that has developed for decades, and Changjiang Hydraulic Machinery Co., Ltd. has a high evaluation in the industry. From the design in hard seal butterfly valve, to the production in hard seal butterfly valve, to the sales in hard seal butterfly valve, to the installation in hard seal butterfly valve, it is a one-stop service. On the premise of ensuring the quality of products, we will provide the most comprehensive service, persist for decades, and reassure customers that Changjiang brand only recognizes it.

Hard seal butterfly valve manufacturer: Wuxi Zefang Valve Industry Co., Ltd.

Zefang produces the highest-end hard seal butterfly valve. Whether it is Italian AT, Taiwan Province Shan Ye or Taiwan Province Ellison, many brands have Zefang agents. Now, Zefang has not only built a complete production system and service system at home, but also built a grand blueprint internationally. As big as the United States, Russia, Australia and Brazil, as small as neighboring countries, Japan, South Korea, Iran and Pakistan all have a place for Zefang products.

Characteristics of new long-life stainless steel butterfly valve

At present, hard seal butterfly valve has been widely used in petroleum, chemical industry, metallurgy, hydropower and many other fields as an element to realize the opening and closing of pipeline system and flow control. In the known butterfly valve technology, the sealing form mostly adopts sealing structure, and the sealing material is rubber, PTFE and so on. Due to the limitation of structural characteristics, it is not suitable for industries such as high temperature resistance, high pressure resistance, corrosion resistance and wear resistance. At present, the more advanced butterfly valve is the triple eccentric metal hard seal butterfly valve. The valve body and the valve seat are connected parts, and the sealing surface of the valve seat is covered with heat-resistant and corrosion-resistant alloy materials. Compared with the traditional butterfly valve, this butterfly valve has the advantages of high temperature resistance, easy operation, no friction when opening and closing, compensation sealing with the increase of torque of transmission mechanism when closing, and improved sealing performance and service life of the butterfly valve.

The difference between hard seal butterfly valve and soft sealing butterfly valve

Hard seal butterfly valve: The two sides of the sealing pair are made of metal or other hard materials, which is called "hard seal". This kind of seal has poor sealing performance, but high temperature resistance, wear resistance and good mechanical properties, such as steel+steel; Steel+copper; Steel+graphite; Steel+alloy steel; The steel here can also be cast iron, cast steel, alloy steel or surfacing and spraying alloy.

Soft sealing butterfly valve: both sides of the sealing pair are made of metal material, and the other side is made of elastic nonmetal material, which is called "soft sealing". This kind of seal has good sealing performance, but it is not resistant to high temperature, easy to wear and poor mechanical properties, such as steel+rubber; Rotor pump, such as steel+PTFE.

The advantage of soft sealing butterfly valve is good sealing performance, but the disadvantage is that it is easy to age and wear and has a short service life.

Hard seal butterfly valve has a long service life, but its sealing performance is relatively worse than that of soft seal.

? The price in hard seal butterfly valve

1, multistage hard seal butterfly valve? Bidirectional flange butterfly valve

Price: 349.00

? 2.D373H- 16C Cast Steel/Carbon Steel Wafer Butterfly Valve

Price: 200 yuan

How to choose a manufacturer in hard seal butterfly valve depends on many factors, whether it is production technology or human resources equipment. For a good manufacturer, the production technology will never stagnate, and only the constantly updated technology can achieve the maximum benefit. Of course, other things can be changed, quality can't be changed, and maintaining excellent quality forever is the long-term way.