Dervos Holiday Arrangement For the 72nd National Day
- Sep 30, 2021
- Hits: 27
Respected customers and friends: First of all, we are so grateful for your support all the time. As the 72nd National Day approaches, we are going to have days off from Oct. 1st to Oct.7th....
The Development of Check Valves
- Sep 20, 2021
- Hits: 31
With the development of industrial enterprise, check valves have gone through several reforms and developments to keep pace with the industrial need. Compared to the clumsy and rough check valves...
Wafer Type Check Valve Structure & Installation Tips
- Sep 09, 2021
- Hits: 52
A wafer check valve is also called a reflux valve, a back pressure valve, a one-way valve and a non-return valve. This type of valve is automatically opened and closed by the force...
Click For Soft Seal Gate Valves You Don't Know
- Sep 02, 2021
- Hits: 40
Soft Seal Gate Valve Overview The soft seal gate valve is a common type of valve used in water supply and drainage projects, mainly for connecting and cutting off the flow of pipeline media. The soft...
Differences Between Soft Seal & Metallic Seal of Gate Valves
- Aug 26, 2021
- Hits: 153
1. In Terms of Structure The metallic seal is a metal-to-metal seal, where both the sealing ball and seat are metal. Its machining accuracy and technology is relatively difficult, and it is...
Several Tips For Globe Valves You Should Never Miss
- Aug 20, 2021
- Hits: 22
The stem axis of the globe valve is perpendicular to the sealing surface of the valve seat. And the valve's stem has a relatively short stroke and a very reliable shut-off action, which makes...
Differences Between Cryogenic Valves and Normal Temp. Valves
- Aug 12, 2021
- Hits: 33
As the name suggests, the cryogenic valve is a valve that can work in the extra-low temperature working condition. Defined by its working temperature, we regard one whose working temperature is lower...
Do You Make These 5 Mistakes in Choosing Valves for Steam System?
- Aug 06, 2021
- Hits: 22
Steam generated by water boilers is used in a wide range of industrial applications. Unlike most other industrial fluids, steam has special characteristics that make it difficult to control with valves....
What Are Flush Bottom Valves & Slurry Angle Valves?
- Jul 30, 2021
- Hits: 145
Glad to learn you're in the market of chemistry and valve industry. Dervos is a leading valve manufacturer and trader in China and a long-term partner with bp, VPF, Chevron, and other valve...
General Knowledge About Butterfly Valves
- Jul 17, 2021
- Hits: 52
The butterfly valve is installed vertically in the pipeline. In the cylindrical channel of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis with a rotation angle...