How to ensure sealing performance when using lock nut fittings to connect pipes?

Ensuring the sealing performance of lock nut fittings when connecting pipes is one of the key factors to ensure the safe and stable operation of the pipeline system. Proper selection of gaskets is crucial. The selection of sealing gaskets should take into account factors such as the material of the pipeline, the medium, and the operating temperature and pressure. Usually, sealing gaskets are made of high temperature and corrosion resistant materials such as rubber, silicone or polytetrafluoroethylene (PTFE). Choosing the appropriate gasket can effectively improve sealing performance and reduce the risk of leakage.

When tightening the lock nut, appropriate mounting force needs to be applied. Use a suitable torque wrench or torque gauge to ensure that the torque applied meets the manufacturer's recommendations. Tightening too tight can cause the gasket to deform or crack, while tightening too loose can cause the connection to leak. Therefore, appropriate installation force is the key to ensuring sealing performance.

During the tightening process, ensure that force is applied evenly so that the gasket can be evenly pressed against the pipe joint. Uneven force distribution may cause uneven local stress on the sealing gasket, thus affecting the sealing effect. By applying force evenly, it can be ensured that the gasket can effectively fill the gaps in the pipe interface and improve the sealing performance.

Additionally, regularly inspecting connections for signs of leakage is an important step in maintaining sealing performance. Tighten or replace the sealing gasket as needed to ensure that the sealing effect is always in optimal condition. During the installation process, you should also ensure that the pipe surface is clean, smooth, and free of damage or dents to ensure the stability of the sealing effect.