Pneumatic tube joint failure can have a variety of reasons, the following will be common pneumatic tube joint failure, introduce the possible causes and judgment methods.

1. Air leakage of pneumatic tube joint

Air leakage of the pneumatic tube joint may be caused by the problem of the material of the joint itself, improper installation, aging of the sealing gasket, etc. To determine the cause of air leakage, perform the following steps:

– Check whether the joint itself has cracks, deformation and other damage;

– Check whether the joint is tightly connected to the pipe, if there is a movable nut or fixed clamp, check whether it is loose;

– Check whether the gasket is aged, broken or installed incorrectly. If it is an O-ring, it can be removed for inspection to verify that it has not lost elasticity or deformation.

2. The pneumatic tube connector is loosely connected

The loose connection of the pneumatic tube joint may be caused by incomplete tightening during assembly, loosening caused by vibration, or thread loss caused by too long use time. To determine the cause of connection loosening, perform the following steps:

– Check that the joint thread is complete and there is no loss or wear. If thread loss is found, replace the joint;

– Check the joint thread for degreasing or impurity. If there are impurities, clean the joint thread and reinstall it;

– Check joints and pipe joints for signs of use, such as traces of oil or gas leaks, to determine whether they are loose.

3. The pneumatic tube connector is broken

The fracture of the pneumatic pipe joint may be caused by the material itself is not resistant to corrosion, fatigue fracture or excessive load. The following steps can be taken to determine the cause of the fracture:

– Check whether the joint fracture has obvious traces of corrosion, deformation or cracking;

– Check whether the joint uses materials that do not match the working environment;

– Check whether the joint is often subjected to excessive load, such as high pressure, high temperature. If an abnormal load is found, the design safety of the piping system should be re-evaluated.

4. Leakage of pneumatic tube connector

The leakage of the pneumatic pipe joint may be caused by poor sealing, aging of the connector or material mismatch. To determine the cause of leakage, perform the following steps:

– Check whether the joint joint has impurities or dirt caused by poor seal;

– Check the material and use time of the seal, if there is aging deformation should be replaced in time;

– Check whether the material of the connector matches that of other parts such as pipes. If it does not match, replace the connector with the appropriate material.

For pneumatic tube joint failure, the occurrence of failure can be prevented and reduced by the following methods:

– Choose high-quality pneumatic tube joint products to avoid using inferior products;

– Regularly check the pneumatic tube joint, detect whether there are air leakage, loosening, breaking and other problems, and deal with it in time;

– When installing the pneumatic pipe joint, it should be correctly installed according to the manufacturer’s instructions and operating specifications to ensure the installation quality;

– Reasonable selection and design according to the working environment and load requirements of the pneumatic tube joint;

– Equipped with additional protective measures, such as seismic, anti-corrosion and other accessories to improve the reliability and service life of the joint.

In short, to determine the cause of the failure of the pneumatic tube joint, it is necessary to carefully check the quality of the joint itself, the installation situation and the working environment and other factors, and analyze and judge the actual situation. At the same time, by strengthening maintenance and maintenance, regular inspection and repair, the service life of the pneumatic tube joint can be extended and the possibility of failure can be reduced.