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Costa-Rica Manual Flanged Butterfly Valve
Product Description
The manual flange butterfly valve is simple in structure, small in size and light in weight, and consists of only a few parts. And only need to rotate 90 ° to quickly open and close, simple operation, while the valve has good fluid control characteristics.
When the manual gas butterfly valve is in the fully open position, the thickness of the butterfly plate is the only resistance when the medium flows through the valve body, so the pressure drop generated by the valve is very small, so it has good flow control characteristics. Butterfly valve has elastic seal and metal seal two types of sealing. Elastic sealing valve, the sealing ring can be embedded in the valve body or attached to the periphery of the butterfly plate.
Butterfly valve is mainly divided into flange type butterfly valve and wafer type butterfly valve, wafer type butterfly valve is used to connect the valve between the two pipe flanges, flange type butterfly valve is on the valve with a flange, with bolts on both ends of the valve flange connected to the pipe flange.
Manual flange butterfly valve with metal seal valve generally longer life than the elastic seal valve, but it is difficult to achieve a complete seal. Metal seals can adapt to higher operating temperatures, and elastic seals have defects that are limited by temperature. If the butterfly valve is required to be used as a flow control, the main thing is to correctly select the size and type of the 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 station.
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