How to choose the connection method between valves and pipes

In industrial piping systems, valve selection is crucial, especially butterfly valves. Butterfly valves are widely used due to their simple structure, low fluid resistance, and ease of operation. Common butterfly valve types include wafer butterfly valve, flanged butterfly valve, and grooved butterfly valve. When selecting a valve-to-pipe connection, it’s crucial to understand the characteristics of different butterfly valve types and their applicable scenarios.

First, the wafer butterfly valve is a common type of butterfly valve, typically used mid-pipe. Its design allows it to be clamped directly between two pipe sections, simplifying the connection and making it suitable for applications with limited space. The advantages of a wafer butterfly valve include its light weight and ease of installation, making it suitable for controlling low-pressure and medium-pressure fluids. When selecting a wafer butterfly valve, ensure that the pipe flange dimensions match the valve dimensions to ensure a secure seal.

Secondly, flanged butterfly valves are connected to pipelines via flanges. This connection provides enhanced sealing and stability, making it suitable for high-pressure and high-temperature applications. Installation of flanged butterfly valves is relatively complex, requiring bolts to connect the valve to the pipeline flange. When selecting a flangd butterfly valve, in addition to considering the valve material and size, it is also important to consider the flange standard (such as ANSI, DIN, etc.) and the sealing material to ensure safety and reliability under high-pressure conditions.

Finally, grooved butterfly valve is a valve connected by a groove and is often used for quick disassembly and maintenance. Grooved butterfly valves are very easy to install and remove, making them suitable for piping systems that require frequent replacement or cleaning. When selecting grooved butterfly valve, consider the pipe material and diameter to ensure the groove can securely hold the valve and prevent leaks.

When choosing the connection method between valve and pipeline, in addition to considering the type of valve, you also need to consider the following factors:

1. Fluid characteristics: Different fluids (such as gas, liquid, slurry, etc.) have different requirements for valves, so you need to choose the appropriate valve type and connection method.

2. Working pressure and temperature: Under high pressure and high temperature conditions, flange butterfly valves may be a better choice, while under low pressure conditions, wafer butterfly valve or grooved butterfly valve may be more suitable.

3. Installation space: When space is limited, the design of the wafer butterfly valve can save space, while the grooved butterfly valve provides greater flexibility.

4. Maintenance requirements: If the piping system requires frequent maintenance, the quick disassembly feature of the grooved butterfly valve will greatly improve work efficiency.

In summary, selecting the appropriate butterfly valve and its connection method is crucial to ensuring efficient and safe operation of your piping system. Understanding the characteristics and applicable scenarios of different butterfly valve types will help you make more informed choices in practical applications. Whether it’s a wafer butterfly valve, flanged butterfly valve, grooved butterfly valve, the right connection method can improve the overall performance and reliability of the system.