Knowledge Extension - Air Shutoff Valve
- May 26, 2020
- Hits: 33
Some people ask why the pneumatic membrane regulating valve in the figure belongs to the air-tight type. First, check the air inlet direction of the pneumatic film, which shows positive....
Working Principles of the Valve Positioner
- May 05, 2020
- Hits: 96
Walking around in the chemical plant workshop, you will see some valves with round heads on some pipes. This is the regulating valve. We can learn some information from its keyword - "regulating",...
Selecting the right safety valve and relief valve
- Nov 06, 2019
- Hits: 28
Safety valves and pressure relief valves are mainly used to protect containers, piping systems and equipment from overpressure, which are important for the safety of workers and equipment. Therefore,...
Flow direction of a globe valve
- Sep 16, 2019
- Hits: 123
Generally, the current medium of the globe valve flows upward from the bottom of the valve seat, which is customarily called "low-in and high-out". When the valve is closed, the sealing packing...
The Selection of the Valves
- Jun 27, 2019
- Hits: 34
The selection of the valves (How to choose valves?) is critical to the long-term operation of the unit during operation. Generally, there are two general characteristics of the valves, the useage...
The Expectations of China Valve Industry 2019 - 2023
- Jun 27, 2019
- Hits: 62
According to statistics, it is estimated that China valve production will reach 8.3 million tons in 2019, the chemical, energy & power and oil & gas industries are the most important markets for...
The Advantages and Disadvantages of Cast Steel Gate Valves
- Jun 27, 2019
- Hits: 131
Recently, some new customers are not particularly aware of the characteristics of cast steel gate valves. Based on recent work practices, Weldon summarized the advantages and disadvantages of cast steel...