發(fā)布時(shí)間：2022-07-14瀏覽量：1466
The American standard flanged all-welded ball valve is a relatively new type of valve. Compared with the American standard flanged ball valve, it has better sealing and more suitable working conditions. The following is a detailed introduction to the characteristics of American standard flanged fully welded ball valves.
The American standard flanged fully welded ball valve installed in the pipeline mainly plays the role of connecting and blocking the flow of the medium, and also has a certain role in regulating the flow.
The characteristics of the American standard flanged fully welded ball valve are as follows:
1. All-welded structure.
1. The valve body is assembled by 6-part forging shell, with compact structure, and the whole ball valve is integrated.
2. The internal curve of the all-welded structure is smooth, and the lubricating connection with the pipeline has no dead angle, and the medium has good fluidity.
Second, the pivot fixed ball design.
1. The American standard flanged fully welded ball valve is supported by high-strength bearings, and the rotation is stable and accurate.
2. The valve stem supported by the pivot can absorb the thrust generated by the pressure of the pipeline medium, reduce the friction between the ball and the valve seat, thereby reducing the operating torque of the valve and opening and closing freely.
3. Design of rotary valve seat.
1. The special rotary valve seat design can make the entire valve seat sealing surface flushed by natural gas in turn, keep the valve seat wear evenly, and prolong the working life.
2. When the valve seat is rotated, foreign matter on the seat ring can be effectively removed.
Fourth, the valve stem and the secondary valve seat are urgently greased and sealed.
1. Adopt low-friction, aging-resistant PTFE sealing material, with long service life.
2. Equipped with a sealing grease injection system, even if the sealing surface is damaged, it can still be sealed by injecting special sealing grease through the secondary valve seat.
五、閥腔壓力自動(dòng)內(nèi)部放電及雙隔斷中腔放壓。
