From last year, a monthly meeting becomes one of Dervos company activities. The purpose of meeting is to solve problems met on work and share ideas on all aspec
On February China's crude oil imports increased 20 percent on year to the highest ever on a daily basis. The number of crude oil importers has rapidly risen
According to the American Chemistry Council (ACC), the U.S. Chemical Production Regional Index (U.S. CPRI)rose by 0.5% in January, as measured on a three-month
In Fujian province, there is a tradition that in last half month of December (according to lunar calender). The boss will hold a big event called Year-End Dinne
In recent years, along with the development of the real economy and the traditional manufacturing, valve and related products, being as an essential part of man
Market competition in the valve rounds has become fiercer in our country. Successful practice of equity on the future development trend of the valve is the focu
1. Gate valve is usually applied in on - off occasions and it can not be used for throttling applications. 2. Gate valve is normally installed on horizontal pi
Caliber of a butterfly valve is mainly determined on flow, media and flow rate. Generally, the flow rate of the liquid is not more than 5m / s, maximum 7-8m / s
With today's science and technology, marine valves already have the advantages of high hardness, strong abrasion and corrosion resistance, long service life
Generally, you should follow these following steps to choose a valve. 1. Process status of a valve is determined by its usage in installation or process piping
Six points about the design principle of safety valve 1. Safety valve must be designed to meet users’ requirements. 2. Once guarantee the actual use, the
Classification of low temperature gate valve: According to the sealing surface, it can be divided into wedge gate valve and parallel gate valve, while wedge gat