How to choose groove butterfly valves based on actual needs?

Before choosing a groove butterfly valve, it is necessary to consider one's actual needs and the characteristics of the site. Choosing a reasonable valve application is a skill, and the butterfly plate of the groove 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

The groove butterfly valve has a simple structure, small volume, and light weight, consisting of only a few parts. And it only needs to rotate 90 ° to achieve suitable opening and closing speed, with simple operation, and the valve has good fluid control characteristics. When the butterfly valve is in the open position, the thickness of the butterfly plate is the resistance of the medium flowing through the valve body, so the pressure drop generated by this valve is very small, which 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. Groove butterfly valves are widely used not only in general industries such as petroleum, gas, chemical, and water treatment, but also in cooling water systems of thermal power plants

The commonly used butterfly valves include clamp type butterfly valves and flange type butterfly valves. 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

The strength performance of a valve refers to its ability to withstand medium pressure. Valves are mechanical products that withstand internal pressure and therefore have sufficient strength and stiffness to protect long-term use from rupture or deformation

The stem of the groove butterfly valve is a through stem structure, which has undergone quenching and tempering treatment, and has good comprehensive mechanical properties, corrosion resistance, and abrasion resistance. When the butterfly valve is opened and closed, the valve stem only rotates without lifting or lowering, and the packing of the valve stem is not easily damaged, with excellent sealing. Fixed with the butterfly plate cone pin, the extended end is designed to prevent the valve stem from bursting out in case of accidental breakage at the connection between the valve stem and the butterfly plate