In the afternoon of October 26, the world young scientists (Wenzhou) summit 2019 Yongjia pump valve industry summit forum was held. All kinds of talents from all over the world gathered together to talk about advanced technology and seek innovative development around Yongjia pump valve industry technology docking activities, aiming to lead Yongjia pump valve industry innovation and upgrading, help Yongjia economy develop with high quality and better serve the new era. “Two health” construction in Wenzhou. Chen Xuedong, academician of Chinese Academy of engineering and technical expert of special equipment design, manufacturing, operation and maintenance engineering attended the Forum.
At present, people have very high quality requirements for precision valve steel castings, so during the process , valve manufacturers also pay great attention to the selection of process methods and production processes, so as to ensure that the production of steel castings can reach higher application standards. First of all, we should be more cautious when choosing raw materials. Although many steel castings do not have much difference in appearance, due to the different selection of raw materials, there will be differences in quality and service life of steel castings in the process of using, so the selection method of raw materials needs special attention.
Making a correct and reasonable production process is the key to reduce the cost of resin sand casting valve. Whether it is reasonable or not directly affects the yield, quality and cost of castings. Continue reading “Promoting Green Casting is the Development Trend of Valve Casting Industry in the Future”
(Reuters) – Oilfield services provider Weatherford International Plc, burdened by a heavy debt load and years of losses, said on Friday it would file for Chapter 11 bankruptcy protection.
The company, which at its peak was valued at more than $50 billion, never recovered from the 2014 oil price collapse. Efforts under Chief Executive Officer Mark McCollum to quickly sell assets and pare debt struggled.
Oxygen globe valve is one of the special valves for oxygen pipeline network. It not only has the function of ordinary globe valve, but also has the characteristics of good flame retardancy, good conductivity, fast heat transfer, compact structure, oil proof, safety and reliability. With the development of metallurgical industry, oxygen globe valve and oxygen ball valve are widely used in iron and steel, metallurgy, medicine, chemical industry and so on.
Compressed oxygen exposed to a small amount of oil will immediately burn violently and cause explosion, so oxygen pipeline pipes, fittings, Continue reading “Oxygen globe valve: copper alloy globe valve”
With the acceleration of urbanization in China, domestic sewage treatment and municipal treatment facilities will also be developed on a large scale. As a necessary pipe and valve, it will welcome a broad market prospects.
Thanks to the strong support of the government, the production and application of plastic pipes in China has really begun to develop rapidly, and cast iron pipes have been replaced in some fields, such as: sanitary ware water tank fittings with water intake below water level (low water intake); leakage with water seal less than 5 cm, which is prohibited in all new construction projects and maintenance projects; cast iron drainage pipes with common sockets (manual sand turning rigid joint) Cast Iron Drainage Pipe; Galvanized Iron Sheet Outdoor Rainwater Pipe; Spiral Lifting Cast Iron Nozzle; Cast Iron Globe Valve. It is not allowed to be used in indoor parts of residential projects. Continue reading “The market competitiveness of cast iron valves is further reduced？”
Valve Selection and Setting Position
(1) Valve Selection Principle for Water Supply Pipeline
1. When the pipe diameter is not more than 50 mm, globe valve should be used. When the pipe diameter is greater than 50 mm, gate valve and butterfly valve should be used.
2. When flow and water pressure need to be regulated, adjusting valves and globe valves should be adopted.
As Valve supplier, an occupation habit, each accident /explosion showed in media, we can’t help wondering whether it is caused by valve quality problems? Although the probability is not necessarily very high. We will constantly remind ourselves to concentrate on improving valve quality and take this as a precaution.
44 killed, at least 90 people were seriously injured in the explosion at the Jiangsu Tianjiayi Chemical Co., the state-run China News Service said Friday, and 32 of them were critically ill. Videos circulating online showed people who appeared to have been cut by glass and other debris, eastern China’s Jiangsu province on 2019 Thursday (March 21) afternoon.
5. Cock Valve
It refers to a kind of valve whose closing parts are plunger-shaped rotary valves. The opening or closing of the valve can be realized by 90 degree rotation to make the opening on the valve plug and the opening on the valve body open or separate. The shape of the valve plug can be cylindrical or conical. Its principle is basically similar to that of ball valves. Ball valves are developed on the basis of cock valves. They are mainly used in oil field exploitation and petrochemical industry.
Valve refers to a valve whose closure (disc) moves along the center line of the seat. According to the movement of the disc, the change of the seat opening is proportional to the disc travel. Because the stem opening or closing stroke of this kind of valve is relatively short, and has a very reliable cut-off function, and because the change of the seat opening is proportional to the disc travel, it is very suitable for flow regulation. Therefore, this type of valve is very flexible for cutting or regulating and throttling.
Butterfly valve is a kind of valve that opens, closes and regulates fluid passage by reciprocating about 90 degrees of disc-type opening and closing parts.
It is simple in structure, small in volume, light in weight and low in consumables. It is not used in large caliber valves.