Dervos’ First Batch of Free Masks on Its Way
- Mar 23, 2020
- Hits: 71
Dervos posted it's first batch of supplies, of which consists 14 packages, carrying 3200 pieces of disposable medical masks and 500 KN95 masks, to Hungary, Spain, Romania and other 11 countries respectively...
Free Disposable Medical Masks from Dervos
- Mar 20, 2020
- Hits: 196
In the past two months Chinese people made great efforts to fight against the COVID-19. Allthought it was not a period of easy time for us, we were still so moved by all the help and care from people...
Cast steel valves vs forged steel valves
- Mar 06, 2020
- Hits: 263
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 valve industry. It is economical, easy-to-manufacture...
How does a Float Valve work?
- Feb 28, 2020
- Hits: 71
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 ball) always floats on the water, when...
Dervos 2019 Annual Meeting & Party
- Feb 21, 2020
- Hits: 71
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, purchasing, logistic, administration, financial,...
Global Valve Market Size
- Feb 13, 2020
- Hits: 30
Transparent Market Research (TMR) recently released a market research report on all the dynamics and analysis of the global valve market. According to this report, the global valve market will reach US...
Dervos Donation Plan for Fighting against Coronavirus
- Feb 10, 2020
- Hits: 33
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 shortage of domestic medical supply, many medical...
Precautions for pressure testing of a Plug Valve
- Jan 10, 2020
- Hits: 150
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 unchanged after installation. Do not test the...
Dervos Valves in ECO FUEL INNOVATION PROJECT
- Jan 03, 2020
- Hits: 51
In 2017, we supplied 136 pcs of valves for the ECO FUEL INNOVATION PROJECT. This is a testing project of converting oil-wood chip to diesel, and Dervos is proud to be involved in this fuel innovation...
Single Piston Effect and Double Piston Effect Seats of Ball Valves
- Dec 18, 2019
- Hits: 4327
SPE (Single Piston Effect) seats are usually called self-relieving seats. Trunnion mounted ball valves with SPE seats are able to release over-pressure in cavity into pipeline automatically. ...