Reasons for steam rotary joint leakage

One reason for steam rotary joint leakage is the spring and column ring.

Generally, steam rotary joints are made of carbon steel springs, with only a layer of chrome plating on the surface. After using the steam rotary joint for a period of time, firstly, the inner wall of the shell rusts, and there is no gap between the outer diameter of the spring and the inner diameter of the shell, so the spring cannot spring out. The second is the column ring inside the steam rotary joint. Used as a support for oil-free bearings. Due to rusting on the inner wall of the shell, it cannot meet the compensation requirements. The spring also loses its compensating effect. There is only one solution, which is to replace the housing and spring.
Although stainless steel springs for steam rotary joints are not easy to rust, they also have their drawbacks. It’s easy to soften at high temperatures. To use stainless steel springs, the springs must be treated. The quality of processing directly affects future use. Knowing these reasons, one can understand why steam rotary joints are prone to leakage.