Introduction of Welded Butterfly Valve Applicable to Cooling Water System

When the butterfly valve is in full open position, the butterfly plate thickness 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 better flow control characteristics. Welded butterfly valve has elastic seal and metal seal.
Elastic sealing valve, sealing ring can be embedded in the valve body or attached to the butterfly plate. Valves with metal seals generally have longer service life than those with elastic seals, but it is difficult to achieve complete sealing. Metal seal can adapt to higher working temperature, while elastic seal has the defect of temperature limitation.

If welding butterfly valve is required to be used as flow control, the main thing is to correctly select the size and type of valve. The structure principle of welded butterfly valve is especially suitable for making large caliber valves. Welded butterfly valves are not only widely used in petroleum, gas, chemical industry, water treatment and other general industries, but also used in cooling water system of thermal power plants.