Worm gearButterfly valveSimple structure,volumeSmall, light weight, made up of only a few parts. And only need to rotate 90° can quickly open and close, operationsimple.withThe valve has good fluid control characteristics.Flange butterfly valveIn full open position, butterfly valve has elastic seal and metal seal two types of seal. Resilient seal valve,Sealing ringCan be embedded inThe valve bodyOn or attached to the periphery of the plate.

Metal sealed valves generally have longer life than elastomally sealed valves, but complete sealing is difficult to achieve. Metal seal can adapt to higher working temperature, while elastic seal has the defect of temperature limitation.

If butterfly valves are required for flow control, it is important to choose the correct size and type of valve. The structure principle of butterfly valve is especially suitable for making large diameter valve. Butterfly valve is not only widely used in oil, gas, chemical industry, water treatment and other general industries, but also used in the cooling water system of thermal power stations.

The commonly usedButterfly valveThere areWafer butterfly valveandFlanged butterfly valveTwo kinds. Wafer butterfly valves are usedstudConnect the valve between two pipe flanges, flanged butterfly valves are provided on the valveThe flange, bolt the upper and lower ends of the valveFlange connectionOn the pipe flange.

In the fully open position, the thickness of the disc is the medium flowing throughThe valve bodyWhen the only resistance is generated through the valvePressure dropSmall, so it has good flow control characteristics. Butterfly valve has bullet seal and metal seal two types of seal. Resilient seal valve, seal ring can be embedded in the body or attached to the edge of the disc.