The connection method of PP-R pipe mainly adopts hot-melt connection. If there is no good hot-melt connection operation method, choose a good pipe material immediately, also
It is still difficult to guarantee the installation quality of the pipeline. To ensure the quality of the connection, you must first choose the hot-melt tools that match the manufacturer, and the heat of the welding machine.
Time and heating temperature should be strictly implemented according to operating procedures.
The PP-R pipe adopts the form of thermal fusion connection. The connection between the pipe and the fitting can only be used once. Therefore, the water supply branch pipe is installed in the wall.
During the installation, the material should be accurately cut according to the design requirements and the specific conditions of the construction site. If the pipeline is laid underground, attention should be paid to
Minimize the number of interfaces.
Before welding the pipes, carefully clean the surfaces of the pipes and joints to remove oil, impurities and burrs on the surface of the pipes. Pay attention to pipe insertion
The length should be appropriate, and even convex circles should be formed at the pipe joints after the connection. If it is uneven, even if there is a gap on one side, it means welding.
Unsatisfactory, it is difficult to ensure that the joints are not leaking, and you should reconnect in time.
1. Pipes and fittings should be connected by hot-melt. It is not allowed to wire directly on pipes and fittings. They can be connected to metal pipes by flanges.
Connections to water heaters must use pipe fittings with metal inserts.
2. Reliable hot-melt tools must be used for hot-melt connection to ensure the quality of welding.
3. Use special scissors to cut the pipe vertically. The cut should be smooth and free of burrs.
4. Clean the welding parts of the pipes and fittings to avoid sand and dust from damaging the quality of the joints.
The thermal head is fixed on the fuser, connect the power supply, and wait for the heating head to reach the optimal temperature.
5. Mark the welding depth on the pipe with a pencil.
6. Insert the pipes and fittings into the fusion splicer and heat them according to the specified time.
7. After heating, remove the pipe fittings and connect them immediately. When the pipes and fittings are connected and matched, if the two are not in the correct position, you can
Make small adjustments within a certain period of time, but the twist angle must not exceed 5 ° C.
8. After the connection is completed, you must hold the pipe and the fittings tightly with both hands to maintain sufficient cooling time. After cooling to a certain degree, you can release your hands.
Continue to install the next section of pipe.
After the pipeline is connected, the location of the pipeline should be indicated with colored paint on the wall or floor to avoid damaging the pipeline during the secondary decoration. Concealed
Water supply risers should be fixed support points when they pass through the floor to prevent the cumulative expansion and contraction of the risers to generate displacement stress at the exit of the uppermost branch pipe.
The branch pipe caused damage. At the same time, it is very important for the installation of PP-R pipes to install pipe supports in accordance with the requirements of the code.