Dalian marine valve is a commonly used pipeline equipment on ships, used to control the flow of liquids or gases. It has the advantages of small size, light weight, easy operation, and good sealing, and is therefore widely used in various pipeline systems of ships. There are several installation methods for Dalian marine butterfly valves:

1. Welding installation method: Welding the butterfly valve onto the pipeline can ensure sealing. This installation method is suitable for relatively fixed positions in pipeline systems, because once the installation is completed, the position of the butterfly valve cannot be adjusted anymore.

2. Flange connection installation method: The butterfly valve and pipeline are connected by flanges, which can make the butterfly valve position relatively flexible, convenient for installation and maintenance, and also facilitate the replacement of the butterfly valve. The flange connection requires the selection of corresponding specifications of flanges and sealing gaskets to ensure the sealing of the connection.

3. Pipe clamp connection installation method: A pipe clamp connection is used between the butterfly valve and the pipeline. This connection method can quickly install and disassemble the butterfly valve, which is more suitable for pipeline systems that require frequent replacement of the butterfly valve. However, the sealing performance of the pipe clamp connection may not be as good as that of the flange connection.

4. Bolted installation method: The butterfly valve and pipeline are connected by bolts, which is suitable for pipeline systems that require frequent replacement of butterfly valves and high sealing requirements. Bolted connections require the use of bolts and washers of corresponding sizes to ensure the tightening force and sealing of the connection.

5. Welding+flange connection installation method: In some cases, welding and flange connection need to be used simultaneously between the butterfly valve and the pipeline to meet higher sealing requirements and more flexible position adjustment requirements. This connection method requires attention to the height difference between welding and flanges to ensure the flatness and sealing of the connection.

When installing marine butterfly valves, the following points should be noted:

The installation direction of the butterfly valve must be consistent with the flow direction of the pipeline, otherwise it will affect the flow and control effect of the fluid.

Before installing the butterfly valve, it is necessary to clean and inspect the pipeline to ensure that there are no debris and dirt inside, which will not affect the normal use of the butterfly valve.

3. When installing bolted and flange connections, use the correct size of bolts and washers, and tighten them correctly to ensure the tightness and sealing of the connections.

After installation, it is necessary to conduct opening and closing tests on the butterfly valve, as well as testing and inspection in terms of sealing and safety.

The installation method of marine butterfly valves is suitable for different situations depending on the pipeline system of the ship, and needs to be selected and executed according to the actual situation. During the installation process, it is necessary to strictly follow relevant specifications and requirements to ensure the performance and safety performance of the butterfly valve.