Structural characteristics of butterfly valve

Butterfly plate of butterfly valve is installed in diameter direction of pipeline. In the cylindrical passage of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis with a rotation angle of 0 °~ ninety ° Between, rotate to 90 ° When, the valve plate is fully open.

Butterfly valve is simple in structure, small in volume and light in weight, and only consists of a few parts. And it’s only 90 degrees ° It can be opened and closed quickly, and it is easy to operate. At the same time, the valve has good fluid control characteristics. When butterfly valve is in fully open position, the thickness of butterfly plate is a single resistance when the medium flows through the valve body. Therefore, the pressure drop generated by the valve is very small, so it has better flow control characteristics. Butterfly valve has two sealing types: elastic seal and metal seal. Elastic seal valve, seal ring can be embedded in the body or attached to the butterfly plate around.

Metal sealed valves generally have longer life than elastic ones, but it is difficult to fully seal them. Metal seal can adapt to higher working temperature, while elastic seal has defects limited by temperature.

If butterfly valve is required to be used as flow control, it is mainly to select the valve size and type correctly. The structure principle of butterfly valve is especially suitable for making large diameter valve. Butterfly valve is not only widely used in petroleum, gas, chemical industry, water treatment and other general industries, but also used in the cooling water system of thermal power station.

There are two kinds of butterfly valves, namely, wafer butterfly valve and flange butterfly valve. The double bolt is used to connect the valve between the two pipe flange, and the flange butterfly valve is equipped with flange on the valve, and the flange on both ends of the valve is connected to the pipe flange with bolts.Structural characteristics of butterfly valve

Butterfly plate of butterfly valve is installed in diameter direction of pipeline. In the cylindrical passage of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis with a rotation angle of 0 °~ ninety ° Between, rotate to 90 ° When, the valve plate is fully open.

Butterfly valve is simple in structure, small in volume and light in weight, and only consists of a few parts. And it’s only 90 degrees ° It can be opened and closed quickly, and it is easy to operate. At the same time, the valve has good fluid control characteristics. When butterfly valve is in fully open position, the thickness of butterfly plate is a single resistance when the medium flows through the valve body. Therefore, the pressure drop generated by the valve is very small, so it has better flow control characteristics. Butterfly valve has two sealing types: elastic seal and metal seal. Elastic seal valve, seal ring can be embedded in the body or attached to the butterfly plate around.

Metal sealed valves generally have longer life than elastic ones, but it is difficult to fully seal them. Metal seal can adapt to higher working temperature, while elastic seal has defects limited by temperature.

If butterfly valve is required to be used as flow control, it is mainly to select the valve size and type correctly. The structure principle of butterfly valve is especially suitable for making large diameter valve. Butterfly valve is not only widely used in petroleum, gas, chemical industry, water treatment and other general industries, but also used in the cooling water system of thermal power station.

There are two kinds of butterfly valves, namely, wafer butterfly valve and flange butterfly valve. The double bolt is used to connect the valve between the two pipe flange, and the flange butterfly valve is equipped with flange on the valve, and the flange on both ends of the valve is connected to the pipe flange with bolts.