1. The specific method is to use a joint body as the mother body, and press the nut and the ferrule onto the pipe. There are mainly socket, elbow, tee and others. However, it has been found that even in the same batch of goods from the same manufacturer, the depths of the conical holes on these joint bodies are often different, resulting in leakage. The correct way should be, what kind of joint body is used to connect one end of the pipe, and the corresponding connection end should be pre-assembled with the same type of joint, so as to avoid leakage problems to the greatest extent. The pipe ends should be flush. After the pipe is sawed off, it should be polished and flushed on a grinding wheel and other tools, rough deburred, cleaned and blown with high-pressure air before use. During pre-installation, the coaxiality of the pipe and the joint body should be kept as far as possible. If the deflection of the pipe is too large, the seal will fail. The preloading force should not be too large. The inner edge of the ferrule should be just embedded in the outer wall of the pipe, and the ferrule should not be significantly deformed.
2. It is forbidden to add fillers such as sealant during use. In order to achieve better sealing effect, some people apply sealant on the ferrule, as a result, the sealant is flushed into the hydraulic system, causing failures such as blockage of the orifice of hydraulic components.
3. When connecting the pipeline, the pipe should have enough deformation allowance to avoid the pipe being subjected to tensile stress.
4. When using the connecting pipeline, it should be avoided to be subjected to lateral force. If the lateral force is too large, the sealing will not be tight.
5. When the connecting pipeline is used, it should be tightened at one time to avoid multiple disassembly, otherwise the sealing performance will be deteriorated.
6. The brass compression fittings is generally used in the middle connection of the gas or liquid transmission pipe, which is convenient and quick to use. There are clamps at both ends of the ferrule type straight-through joint. connected after being clamped.