How much does a hard sealed butterfly valve cost

Pneumatic flange butterfly valvePowder medium butterfly valveAdopting an upper mounted structure, the connection bolts of the valve body are reduced under high pressure and large diameter conditions, enhancing the reliability of the valve and overcoming the impact of system weight on the normal operation of the valve.

Butterfly valves have a simple structure, small size, and light weight, consisting of only a few components. And it can be quickly opened and closed by simply rotating 90 °, with simple operation, and the valve has good fluid control characteristics. The butterfly plate of the butterfly valve is installed in the diameter direction of the pipeline. In the cylindrical passage of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis at an angle between 0 ° and 90 °. When it rotates to 90 °, the valve is fully open. When the flange butterfly valve is in the * open position, the thickness of the butterfly plate is the only resistance for the medium to flow through the valve body. Therefore, the pressure drop generated by this valve is very small, and it has good flow control characteristics.

Butterfly valves have two sealing types: elastic sealing and metal sealing. Elastic sealing valve, the sealing ring can be embedded on the valve body or attached around the butterfly plate. Valves with metal seals generally have a longer lifespan than those with elastic seals, but it is difficult to achieve * sealing. Metal seals can adapt to higher operating temperatures, while elastic seals have the drawback of being limited by temperature. If butterfly valves are required for flow control, the main thing is to choose the correct size and type of valve. The structural principle of butterfly valves is particularly suitable for making large-diameter valves.

Pneumatic flange butterfly valve

It is widely used not only in general industries such as petroleum, gas, chemical, and water treatment, but also in the cooling water system of thermal power plants. There are two commonly used butterfly valves: clamp type butterfly valve and flange type butterfly valve. The clamp type butterfly valve is connected between two pipeline flanges with double headed bolts. The flange type butterfly valve has a flange on the valve, and the flanges on both ends of the valve are connected to the pipeline flange with bolts. When in the open position, the thickness of the butterfly plate is the only resistance for the medium to flow through the valve body, so the pressure drop generated by this valve is very small, thus having good flow control characteristics.