Today, the coal chemical industry line is spread all over the world, and the products of the coal chemical industry chain are closely related to our lives. Coa
Valve maintenance A valve is a fitting on equipment and pipelines, and its maintenance should be carried out in conjunction with the maintenance of the equipme
1. The power supply with vertical external characteristics is used, and the positive polarity is used when DC (welding wire is connected to the negative electro
A safety valve plays a role in preventing overpressure operation during the operation of the pressure vessel. When the pressure in the pressure vessel rises abo
Check valve has a simple structure. The valves don't require electric power to drive, nor do they need much attention. When the medium goes through, the dis
Ball valves are widely used in many commercial, institutional and industrial areas where it requires the isolation of system parts, or just to regulate the on-o
1. When testing the pressure of the whole system, the plug valve should be kept in full open position, which means that the full open position shall remain unch
In the past two weeks, the whole country have been uniting together to fight against Coronavirus outbreak in China. We have learnt that due to a severe shortag
Transparent Market Research (TMR) recently released a market research report on all the dynamics and analysis of the global valve market. According to this repo
After one-year collective efforts of all Dervos people, we finally have our annual meeting and party. The whole morning, people from all departments (sales, QC
Float Valves modulate to maintain a constant liquid level in a storage tank by compensating for variations in supply or demand. The float ( a stainless steel ba
People has been debating which one is better between cast steel and forged steel valves for a long time. For a long period, cast steel valves dominated the valv