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Is The Flange Ball Valve Suitable For Use?
- Jun 26, 2017 -

With the rapid development of science and technology, production technology and product structure of continuous improvement, in a short period of 40 years, has rapidly developed into a major valve class. In Western developed countries, the use of ball valve is increasing year by year.

In China, flange ball valve is widely used in petroleum refining, long-distance pipeline, chemical, paper, pharmaceutical, water, electricity, municipal, steel and other industries, occupies a pivotal position in the national economy. It has a 90 degree rotation action, the swivel body is a sphere, with a circular through hole or passage through its axis. Flange ball valve in the pipeline is mainly used to cut, distribution and change the direction of the media flow, it only needs to rotate 90 degrees of operation and a small torque can be closed tightly.

Ball valve is most suitable for the switch, cut off the valve to use, V-type ball valve. Electric valve should pay attention to the pipeline parameters, the special attention should be paid to the use of environmental conditions, because the electric valve in the electric device is a mechanical and electrical equipment, its use of its use by the environment greatly affected. Normally, the electric ball valve, butterfly valve in the following environment to pay special attention.

Stainless steel flange ball valve only need to use the rotation of ninety degrees of operation and a small transition torque can be closed tight. Stainless steel flange ball valve completely equal to the valve body cavity for the medium to provide a very small resistance, through the flow channel. It is generally thought that the ball valve is most suitable for direct opening and closing use, but the recent development has been described as the ball valve to save and manipulate the use of traffic. The main features of the stainless steel flange ball valve are their compact layout, ease of operation and maintenance, and are suitable for use in water, solvents, acids and natural gas, and are also suitable for media with poor operating conditions such as oxygen hydrogen peroxide, methane and ethylene Wait. Stainless steel flange ball valve body so all, but also can be modular, the ball should be installed in the horizontal direction of the pipeline. Stainless steel one-piece ball valve operating principle 1, stainless steel one-piece ball valve in the open process: in the closed position, the ball by the valve stem of the mechanical pressure effect, pressed on the seat. When the handwheel is turned counterclockwise, the stem moves in the opposite direction, and its bottom corner plane releases the ball from the seat. The stem continues to be lifted and interacts with the guide pins in the spiral groove of the valve stem so that the ball starts to rotate without conflict. Until the full open position, the valve stem to the limit position, the sphere rotation to full open position. 2, stainless steel one-piece ball valve in the closed process: closed, clockwise rotation of the handle, stem start to reduce and make the ball from the beginning of the valve seat rotation. Continuous rotation of the hand wheel, the stem was embedded in the spiral groove on the effect of the guide pin, so that the stem and the ball with the rotation of ninety degrees. When the seal is about to be closed, the sphere has been rotated 90 degrees without touching the seat. The final round of the handwheel turns, and the corners of the stem at the bottom of the stem are mechanically wedged to the pressed ball, which is tightly pressed against the valve seat to reach the complete seal.