Application of Threaded Pup Joints in Pipe Connection

Threaded pup joints are commonly used accessories in industrial pipeline connections. They are mainly used to connect pipelines. They are easy to install and disassemble and can withstand high pressure. The surface of the threaded pup joints is flat, crack-free, and has no obvious defects such as pores and inclusions, making them highly durable and reliable. ‌

Main types‌

‌1. Single-end threaded pup joints: One end is externally threaded and the other end is flat or beveled. This pup joint is convenient to install and disassemble, suitable for various high-pressure fluid pipelines and equipment, and can withstand high pressure. ‌

2. Double-end threaded pup joints: Both ends are externally threaded. This pup joint is also suitable for high-pressure fluid pipelines and equipment, with a high cost-effectiveness, a flat surface, no cracks, no obvious defects such as pores and inclusions, and is durable. ‌

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Installation and disassembly

‌1. Installation method‌: Screw one end of the threaded pup joint into one end of the pipe to ensure that the threads are aligned; use an appropriate torque wrench or wrench to tighten the connection to ensure that the connection is firm; check whether there is leakage at the connection and seal it if necessary.

‌2. Disassembly method‌: Use an appropriate wrench or torque wrench to rotate the threaded pup joint counterclockwise to loosen the connection; ensure that excessive force is not applied during the disassembly process to avoid damaging the threads or connecting parts; check whether the connecting parts after disassembly are damaged or worn, and replace or repair them if necessary.

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Maintenance and care‌

1. Regular inspection‌: Regularly check whether there is leakage or looseness at the connection of the threaded pup joint to ensure a firm connection.

‌2. Cleaning and maintenance‌: Regularly clean the threaded pup joint and connecting parts to prevent impurities or dirt from affecting the connection effect.

‌3. Lubrication‌: Lubricate the threads when necessary to reduce friction and wear.

‌4. Replace damaged parts‌: If the threaded pup joint or connecting parts are found to be damaged or worn, they should be replaced in time to ensure the reliability and safety of the connection.

How to choose a threaded pup joint

1. Choose the right material according to the application and medium;

2. Choose a threaded pup joint that meets the standards according to the pressure of the pipeline and system;

3. Consider the connection method, and choose internal thread, external thread or pipe insertion threaded pup joint according to the needs;

4. Pay attention to the outer diameter and length of the threaded pup joint to ensure that it meets the requirements after connection.

Summary

Threaded pup joints are mainly divided into single-end and double-end. By understanding the relevant types of threaded pup joints, installation and disassembly methods, and how to maintain and maintain them, we can better help us choose and use threaded pup joints to ensure the safe and stable connection of pipelines and equipment.