Various flange types in piping include weld neck, slip-on, lap joint, and blind flanges.

Understanding the Different Types of Flanges Used in Piping In the world of piping systems, flanges play a crucial role in connecting pipes, valves, and other equipment. They provide a secure and accessible point for assembly, maintenance, and disconnection. There are various types of flanges, each designed to cater to specific requirements and operating conditions. This article will delve into some of the most common flange types used in piping. 1. **Weld Neck Flanges (WN Flanges)** These are commonly used in high-pressure and high-temperature applications due to their strong, stress-resistant design. The long neck of the flange is fused to the pipe, distributing stress evenly across the pipe wall, minimizing the risk of leakage. 2. ** Slip-On Flanges (SO Flanges)** As the name suggests, these flanges slide over the pipe end before being. They are less expensive than weld neck flanges and are typically used in moderate pressure and temperature applications. 3. **Blind Flanges** These flanges have no bore and are used to close the end of a pipeline or vessel. They provide airtight seals and are useful for future access points or when a section of the pipeline needs to be isolated. 4. **Socket Weld Flanges (SW Flanges)** Smaller in size compared to others, they fit snugly around the pipe end and are. They are suitable for small diameter pipes under moderate pressure, often employed in chemical and petrochemical industries. 5. **Threaded Flanges (Tapped Flanges)** Also known as screwed flanges, these feature internal threads that screw directly onto the pipe's external threads **Threaded Flanges (Tapped Flanges)** Also known as screwed flanges, these feature internal threads that screw directly onto the pipe's external threads **Threaded Flanges (Tapped Flanges)** Also known as screwed flanges, these feature internal threads that screw directly onto the pipe's external threads **Threaded Flanges (Tapped Flanges)** Also known as screwed flanges, these feature internal threads that screw directly onto the pipe's external threadsdifferent types of flanges used in piping. They are typically used in low-pressure applications where welding is not feasible or where quick disassembly is required. 6. ** Lap Joint Flanges (LJ Flanges)** Comprising a stub end and a separate flange, lap joint flanges are rotated to align with the pipe. This design allows for easy removal and replacement without disturbing the pipeline. They are used in situations where frequent inspection or cleaning is necessary. 7. **Orifice Flanges** These are specifically designed to accommodate orifice plates, which are used for flow measurement. They usually come with a machined pocket to hold the plate in place. 8. **Long Weld Neck Flanges (LWN Flanges)** Similar to weld neck flanges, LWN flanges have a longer neck that provides additional reinforcement and stress relief, making them ideal for high-pressure and high-temperature services. Each type of flange has its unique characteristics and advantages, making them suitable for different piping scenarios. The choice depends on factors like pressure rating, temperature, material, cost, and ease of installation and maintenance. Proper selection is critical to ensure safe and efficient operation of the piping system. In conclusion, understanding the different types of flanges is essential for engineers and technicians involved in piping design and maintenance. By choosing the right flange for the job, one can optimize performance, minimize risks, and ensure compliance with industry standards and safety regulations.