Tooth profile of tracheal connectors

The tooth profiles of tracheal connectors are mainly G thread and R thread. G thread, also known as parallel pipe thread, has a tooth profile angle of 55 degrees, and both internal and external threads are cylindrical. It is famous for its tight fit and excellent sealing performance. R thread, also known as tapered pipe thread, has a tooth profile angle of 60 degrees, with internal threads being conical and external threads being cylindrical, and relies on thread taper to achieve sealing.

Differences between G thread and R thread
‌Tooth profile angle‌: The tooth profile angle of G thread is 55 degrees, while that of R thread is 60 degrees. This difference directly affects the sealing performance and applicable scenarios of the two.
‌Sealing method‌: G thread ensures excellent sealing effect through the tight fit of cylindrical threads, and is particularly suitable for environments with high pressure and high sealing requirements. R thread achieves sealing with the help of the taper fit of internal and external threads. Its sealing performance is slightly inferior to that of G thread, but the connection process is more convenient.
‌Connection method‌: The cylindrical internal and external threads of G thread need to rotate multiple threads to complete the connection, and the process is relatively cumbersome. The conical internal thread and cylindrical external thread of the R thread can be tightly connected by rotating a small number of threads, which is easier to operate.
Application scenarios of G thread and R thread
G thread: Due to its excellent sealing performance and connection strength, G thread is more suitable for high-pressure and high-sealing pneumatic systems, such as petroleum, chemical and metallurgical fields. In addition, in the fields of robots and automation equipment that pursue high-precision positioning and control, the stability of G thread joints is also highly respected.
R thread: Due to its simple connection and low cost, R thread is more suitable for general pneumatic systems, such as industrial automation and machinery manufacturing. The pneumatic systems in these fields mainly drive and control various types of equipment and mechanisms, and the connection requirements for pneumatic joints are relatively loose, and the convenience and economy of operation are more important.