Rosneft Drills World's Longest Well in Sakhalin
- Nov 27, 2017
- Hits: 32
Rosneft, as a member of Sakhalin-1 Consortium, successfully completed drilling of the world's longest well from Orlan platform at Chaivo field in the Sea of Okhotsk. The length of the well...
Characteristics and Applications of Manual Flanged Butterfly Valves
- Nov 27, 2017
- Hits: 29
The manual flanged butterfly valve is of simple structure, little space and light weight. It can be turned on or off in a short time just by rotating the lever 90°, which is very simple and convenient...
We Got the Registration Certificate of "DVS" in EUIPO
- Nov 20, 2017
- Hits: 65
On November 10th, Dervos got our first Trademark in Europe. It is really a big step of us to move forward to the world. With the rapid development of the whole world's economy, brand protection...
Dervos for Clean Energy Projects
- Nov 20, 2017
- Hits: 35
All the time Dervos keeps offering products with reliable quality and available solution to our customer. Our valve products are widely used in the petrochemical industry, power generation industry and...
Plug Valves Join Our Product Range
- Nov 15, 2017
- Hits: 30
Since foundation, DERVOS focused more on Gate, Globe, Check and Ball Valves, with our customers accumulated and reputation consolidated, facing the increasing demand from customers, we are gradually expanding...
Различные принцип работы различных клапанов
- Nov 15, 2017
- Hits: 110
Задвижка. Задвижки (шиберы) обычно используются в промышленных трубопроводных системах, когда клапан должен быть либо полностью закрыт, либо полностью открыт. Такой клапан называется запорным. Когда клапан...
The Regular Polymer Materials Brief Used For Ball Valve Seat
- Nov 06, 2017
- Hits: 70
The Regular Polymer Materials Brief Used For Ball Valve Seat 1. PTFE-F4 Teflon (PTFE-F4) has excellent heat resistance, cold resistance, non-sticky, good self-lubricating, low coefficient of friction...
Cavitation In Control Valves - E.G. Butterfly Valve
- Nov 06, 2017
- Hits: 99
When the control valves are used in liquid service, they may experience localized cavitation. Cavitation consists of the formation of liquid vapor cavities when the local static pressure drops to the...
Advantages of 3-piece Ball Valves
- Oct 30, 2017
- Hits: 133
The three-piece ball valve is a common ball valve structure, its body is divided into three parts, which are left and right bonnet and the middle valve body. Advantages 1. 3-piece ball valves have...
India Will Issue New Biofuel Policies to Cut Imports of Oil, Natural Gas and Coal
- Oct 30, 2017
- Hits: 34
Lastest news! India, the world's third largest greenhouse gas unit, will soon announce a new biofuel policy to cut imports of fossil fuels such as oil, natural gas and coal. The government aims to...