What types of valve end connections are generally recognized?

The recognized types of valve end connections include welded, threaded, and flanged connections, which are widely used across various applications in piping systems.

Welded connections involve physically fusing the valve to the pipe, providing a strong and permanent joint that is ideal for high-pressure applications where leakage is a significant concern. This method ensures a robust seal and is often used in situations requiring high integrity and minimal maintenance.

Threaded connections utilize threads on both the valve and the pipe, allowing them to be screwed together. This type is convenient for smaller diameter pipes and allows for easy disassembly, making it common in low-pressure and smaller scale applications.

Flanged connections consist of two flanged ends that are bolted together, providing accessibility for maintenance and replacement. Flanged valves are particularly advantageous when frequent disassembly is required, as they allow for quick removal without cutting the piping.

The other options present types of connections that are either less common or not typically standardized for valves. For example, bolted connections are not classically recognized in the same category as the more traditional methods, and soldered connections are usually associated with plumbing fixtures rather than valve installations. Riveted connections are uncommon in modern piping applications due to the availability of more effective methods. Compression and slip