Sanitary Butterfly Valve working principle:

The sanitary butterfly valve is a valve that opens and closes by rotating the valve stem and driving the disc plate to rotate. In the cylindrical channel of the sanitary butterfly valve body, the disc-shaped butterfly plate rotates around the axis, mainly rotating the disc plate 90° to control the flow. When the disc plate reaches 90°, the valve is in a fully open state. At the same time, the angle of the disc plate can be changed to adjust the medium flow. It is generally installed in the diameter direction of the pipeline. The sanitary butterfly valve and the valve stem themselves have no locking ability. In order to effectively adjust the flow, a worm gear reducer must be installed. The sanitary butterfly valve equipped with a worm gear reducer not only makes the sanitary butterfly valve self-locking, but also changes the operating performance of the sanitary butterfly valve and more accurately adjusts the medium flow.

Sanitary stainless steel butterfly valves are suitable for flow regulation in pipelines. They are switched on and off manually, pneumatically or electrically. Since the pressure loss of sanitary butterfly valves in the pipe is relatively large, about three times that of gate valves, when selecting sanitary butterfly valves, the influence of pressure loss on the pipeline system should be fully considered, and the strength of the butterfly plate to withstand the pressure of the pipeline medium when closed should also be considered. In addition, the limitation of the working temperature of the elastic valve seat material at high temperature must also be considered.

The structural length and overall height of sanitary stainless steel butterfly valves are small, the opening and closing speeds are fast, and they have good fluid control characteristics. The structural principle of sanitary butterfly valves is most suitable for making large-diameter valves. When sanitary butterfly valves are required to control flow, the most important thing is to correctly select the specifications and types of sanitary butterfly valves so that they can work properly and effectively.

Features of sanitary stainless steel butterfly valves:

The fluid resistance is small. When fully open, the effective flow area of ​​the valve seat channel is large, so the fluid resistance is small.

Opening and closing are convenient and quick, the adjustment performance is good, and the butterfly plate rotates 90. It can complete opening and closing. The flow rate can be controlled in stages by changing the rotation angle of the butterfly plate.

The opening and closing torque is small. Since the butterfly plates on both sides of the shaft are basically equally affected by the medium, and the torque is generated in opposite directions, the opening and closing is more labor-saving.

The low-pressure sealing performance is good. The sealing surface material is generally made of rubber and plastic, so the sealing performance is good. Limited by the sealing ring material, the operating pressure and operating temperature range of the sanitary butterfly valve are small. However, the operating pressure and operating temperature range of the hard-sealed sanitary butterfly valve have been greatly improved.

Simple structure: Due to the compact structure, short structure length, small size and light weight, it is suitable for large diameters.