What are the main functions of welded valves

What are the main functions of welded valves

Welding valves are used in many equipment, but many people don't know what its main function is.
Welding valve has four main functions: start and stop flow; Control medium flow; And to prevent backflow or backflow, used to regulate the pressure or discharge of the fluid. The selection of a building's piping system can be considered based on temperature, media type, temperature and other factors.
For the fire hydrant control all welded ball valve in high-rise buildings of enterprises, different signal valves should be used. This is the key to whether the fire hydrant system can be reasonably selected and used in case of fire. The control valves of fire hydrant system are set as signal valves, and the open state of all welded ball valves can be displayed in the fire safety control research center, In order to facilitate the students to manage the accountants can test, although the project cost has been improved.
However, the proportion of investment or the whole fire hydrant system is small, which can greatly improve the safety of the whole fire hydrant system, which is worth the investment.
Welding a stop valve is mainly applicable to the pipeline of petroleum, chemical industry, hydraulic power station and fire control power station with nominal high pressure pn10.0-32.0mpa and P (54) 100v-p (57) 170V, working environment temperature ≤ 540 ℃ (in which p (57) 170V is 570 ℃), and the network medium is cut off or connected. Other media are: water, oil, steam, etc. The operation management methods include manual, gear transmission, electric, etc.