Valves are control components in fluid transfer systems, with a variety of different functions such as stopping, regulating, diverting, preventing backflow, stabilizing pressure or overflowing pressure relief. Therefore, it can be used in many fields and has a wide range of uses.

It can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil, liquid metal and radioactive media ......

According to the different materials can be divided into cast iron valves, cast steel valves, stainless steel valves, chrome molybdenum steel valves, chrome molybdenum vanadium steel valves, duplex steel valves, plastic valves, non-conventional customized valves and so on.

Of different materials, different uses, the valve prices vary. So what do we need to know before we buy a valve? How can we buy the right valve?

First, learn about the use of the valve in the equipment or device. Make sure where does the valve can be put in use. What is the applicable media, working pressure and temperature?

Secondly ,comprehend the nominal diameter and the connection of the pipeline connected to the valve : flange, thread, welding, etc..

Third, to determine the way to operate the valve: manual, electric, electromagnetic, pneumatic or hydraulic, electro-hydraulic linkage, etc..

Fourth ,select the material of the shell and inner parts of the valve according to the medium conveyed by the pipeline, working pressure, working temperature.

Fifth, choose the kind of valve, determine the type of the selected valve, and its parameters and geometric parameters, such as: the length of the structure, flange connection form and size...

After finishing the above notes, I believe you should feel that it will be easier to buy a suitable valve at the right price. I really hope that the above explanation can help you can correctly purchase the valve.

Xiamen Dervos is an API-Certified ball valve manufacturing and trading company that specializes in the production of various kinds of valve. If you have any problems in selecting the right kind of valve at a reasonable price, welcome to sort to our free consultation service. Our professional technical stuff will be at your service at anytime. Contact us now!