How to ensure the tightness and durability of the joints when installing PPR pipe fittings?

When installing PPR pipe fittings, it is very important to ensure the tightness and durability of the joints, because the quality of the joints directly affects the stability and service life of the entire pipeline system. Ensuring that the pipe fittings and pipe materials during the installation process meet the standard requirements and selecting suitable PPR pipe fittings and pipes are the first step to ensure the tightness and durability of the joints. PPR pipe fittings themselves have strong corrosion resistance and temperature resistance, but if the quality of pipes and pipe fittings is not up to standard, it may even affect the firmness of the joints.
Before installation, the pipes should be thoroughly cleaned to remove dust, oil and other impurities on the surface of the pipes and pipe fittings. Because any residue will affect the quality of the hot melt connection, resulting in a loose seal at the joint. In order to further ensure the tightness of the pipe fitting connection, the pipe should be cut straight to ensure that the pipe mouth is smooth and flat. Special tools are required for cutting to avoid affecting the fit of the joint due to uneven cutting.
Hot melt connection is a commonly used connection method in PPR pipe systems. It softens the surfaces of the two by heating the connecting surfaces of the pipes and pipe fittings and fuses them together. Before connection, the connecting parts of the pipes and pipe fittings should be heated with a hot melter to ensure uniform temperature. If the heating temperature is too high or the time is too long, the surface of the pipe and the fitting may be damaged; if the heating is insufficient, the connection part cannot achieve the fusion effect, which may cause leakage or fall off.
After the connection part of the pipe and the fitting is heated, quickly insert the pipe into the joint part of the fitting and press hard to ensure that the connection surface of the pipe and the fitting is tightly combined. At this time, the connection part will cool down quickly and form a firm connection. In order to ensure the tightness of the connection, it is recommended to keep it stable for a few seconds after the connection is completed to avoid the movement of the pipe during the cooling process, which will affect the quality of the joint.
In addition to hot-melt connection, PPR pipe fittings can also be installed using threaded connection or compression connection, which are suitable for different scenarios and needs. When making a threaded connection, ensure that the sealing gasket of the threaded part is intact and tightened in place to avoid leakage caused by looseness or damage to the gasket. When pressing the connection, professional tools are needed to ensure that the fittings and pipes are firmly stuck to avoid leakage due to loose connection.
During installation, ensure that the support structure of the pipe is reasonable to avoid deformation of the pipe due to external force, which may cause the joint to loosen. To this end, you can set up pipe supports or support points during the installation process to ensure the stability of the pipe. Avoid installing the pipe too tightly and leave a certain amount of expansion and contraction space to cope with the expansion or contraction of the pipe caused by temperature changes.