The selection of electric butterfly valve

The butterfly valve butterfly plate device in the diameter of the pipe direction. Cylindrical channels in butterfly valve body, disc disc around the axis of rotation, rotation viewpoint of 0 ° - Between 90 °, rotate to 90 °, the valve is in full open position. Electric butterfly valve layout a brief, small volume, light weight, only by a small amount of several parts. And only the rapid opening and closing can be rotated 90 °, short operation, with the valve has a outstanding fluid handling characteristics. Butterfly valves are in a completely open position, the butterfly plate thickness is only the resistance of the medium flows through the body, so what happened after the valve pressure drop is small, it has good flow control characteristics. Butterfly valves have a seal and metal seal two kinds of seal type. Elastic sealing valve, sealing ring can be embedded in the body or attached to the butterfly plate peripheral. Choose metal sealing valve usually last longer than elastic sealing valve, but it is hard to be completely sealed. Metal seal can be used to high working temperature, the elastic seal has disadvantages under the constraint of a temperature. If demand for butterfly valve as a flow control is applied, the first selected the scale and type of valve is correct. The layout principle of butterfly valve particularly appropriate manufacturing large diameter valves. Butterfly valve not only in the oil, gas, chemical industry, water treatment and other industry widely used normally, and also used in cooling water system of thermal power plants. Commonly used butterfly valve, which has two kinds of the wafer butterfly valve and flanged butterfly valve. Wafer butterfly valve with stud connection in place between two pipe flanges and flanged butterfly valve is a valve with flange, bolts on the valve flange pipe flange on both ends. Electric valves at http://www. dazkfy。 com