Butterfly valve’plate is installed in the diameter direction of the pipe.The seal is relatively more reliable. It is light and easy to replace. The main thing is to choose the size and type of the valve in the purchase.The butterfly valve is used as the flow control.2. The disc stops at the closed position when installing.But the cost will be higher. Butterfly valve with bypass valve shall open the bypass valve before opening.Because this is actually a specific purpose that can affect the valve selection.In the cylindrical channel of the butterfly valve body, the disc shaped butterfly plate rotates around the axis, and the angle of rotation is between 0 degrees ~90 degrees. If the flange between two sides is not right, the bolt will be subjected to great pressure, and the valve will leak easily.4.Under high temperature conditions, the bolt expansion of the wafer butterfly valve may cause leakage, so it is not suitable for large pipe diameter under high temperature condition.Flanged butterfly valve body has flanges on both ends, connected to pipe flange.Difference between wafer butterfly valve and flanged butterfly valvePosted by bundorvalve on May 29th, 2018From the specific working conditions, when the China conveyor idler Suppliers imported valves are selected, the wafer type butterfly valve is used as much as possible. When rotating to 90 degrees, the butterfly valve is fully open.Here’s a look at the requirements:1.3.The flanged butterfly valve does not have the above problem, but also has to pay higher cost.
There is no flange at both ends of the wafer butterfly valve body, only a few guiding bolt holes, and the valve is connected with a set of bolts / nuts with the flanges at both ends.. However, the length of the bolt of wafer butterfly valve is longer, and the construction accuracy is higher. Please install according to the manufacturer’s instructions, especially the butterfly valve with large weight should be fixed.5.In addition to selecting the appropriate pair of butterfly valves or flanged butterfly valves,the installation and maintenance of the butterfly valve should be noticed. Determine the opening position according to the rotation Angle of the butterfly plate.Moreover, the wafer butterfly valve can not be used for the downstream and downstream parts of the pipeline, because when the downstream flange is removed, the wafer valve will fall, so we must make joint in other parts to disassemble. Butterfly valve is not only widely used in oil, gas, chemical industry, water treatment and other general industry, but also used in the cooling water system of the thermal power station.Compared with flanged butterfly valve, it is more convenient to disassemble, but the valve cost is lower, but the disadvantage is that a sealing surface issue, both sealing surface have to be opened