DS Pipe and Steel Supply

Complete End Connection

A Complete End Connection is the termination or connection point at the ends of a pipe. It is an essential part of piping systems as it facilitates the joining of pipes to create a continuous and secure pipeline. The nature of the end connection depends on the specific requirements of the application and the type of piping system in use. There are many different types of end connections, some common ones include:

Flanged End Connections

Flanged end connections are one of the most widely used types in the industry. They consist of two flat-faced or raised-face flanges bolted together, with the valve in between. These connections provide a strong and secure joint, making them suitable for high-pressure and high-temperature applications. Flanged connections allow for easy disassembly and are often used in applications requiring frequent maintenance.

Threaded End Connections

Threaded end connections feature male and female threads on the valve body and pipe, allowing for a secure connection by screwing them together. Threaded connections are typically used in low-pressure applications and smaller valve sizes.

The threaded design provides a reliable and tight seal, minimizing leakage. Additionally, threaded connections are often more cost-effective than flanged connections, making them a popular choice for smaller systems.

Welded End Connections

Welded end connections involve permanently joining the valve to the piping through welding. This connection provides a strong, leak-proof joint, suitable for high-pressure and critical applications. Welded connections are commonly used in oil and gas, petrochemical, and power generation industries.

The welded joint eliminates the need for additional gaskets or bolts, reducing the risk of leakage or failure. Additionally, welded connections offer excellent resistance to vibration and thermal cycling, ensuring long-term reliability.

Socket Weld End Connections

Socket weld end connections utilize a socket weld fitting instead of directly welding the valve to the pipe. This connection offers the benefits of a welded joint while providing some flexibility regarding disassembly and reassembly.

The socket weld fitting allows for quick and straightforward disconnection, making repairs or component replacement more manageable. Additionally, socket weld connections provide excellent sealing capabilities and are suitable for high-pressure applications. However, socket weld end connections have certain limitations. They require additional space for the socket weld fitting, which may not be suitable for tight installations. 

Compression End Connections

Compression end connections compress a ferrule onto the valve body and pipe, creating a tight and secure joint. These connections are commonly used in applications where frequent disassembly and reassembly are required, such as sampling systems or instrumentation.

The compression fitting allows for quick and straightforward disconnection, making it suitable for applications that require frequent maintenance or component replacement. 

However, it’s important to note that compression end connections may not be suitable for high-pressure or high-temperature applications. The ferrule material and design may limit the maximum pressure or temperature the connection can withstand.