Installation skills and methods of PPR pipes

When the PPR pipe is hot-melt connected, it shall be accurately set out first, cut with a professional pipe cutter, mark the length to be hot-melt, place it on the supporting hot-melt machine, and connect it according to the specified time required by the product technology. The hot-melt tool can be operated only after it is powered on and reaches the working temperature indicator light; When cutting pipes, the end face must be perpendicular to the pipe axis. Generally, pipe shears or pipe cutting machines are used for pipe cutting, and sharp hacksaws can be used when necessary, but the rough edges and burrs of the pipe section shall be removed after cutting; 

1.Tools / raw materials:
1)PPR pipe
2)PPR Pipe Cutter

3)Hot melt tool

2.Steps / methods:
1)Power on the hot-melt tool and wait until the working temperature indicator light is on before starting operation;
2)Before pipe cutting, the required length must be measured and calculated correctly, and the cutting line and hot-melt connection depth line must be drawn on the pipe surface with a suitable pen. The connection depth shall meet the requirements of the following table;
3)When cutting pipes, the end face must be perpendicular to the pipe axis. Pipe shear or pipe cutting machine shall be used for pipe cutting (Note: the method of sawing pipe with hacksaw is not recommended. In case of use, the rough edges and burrs of the saw mouth shall be removed.
4)The connecting end face and welding surface of pipes and pipe fittings must be clean, dry and oil-free;
5)When welding elbows or tees, pay attention to the direction of the pipeline. It is better to pre assemble it first. After correcting the direction, draw the axial positioning line with a pen;
6)Heating: the pipe end shall be led into the heating sleeve without rotation and inserted to the marked connection depth. At the same time, the pipe fitting shall be pushed onto the heating head without rotation and reach the specified depth mark. The heating time must comply with the provisions of the following table (or the provisions of the hot-melt machine manufacturer);
7)After reaching the specified heating time, the pipe and pipe fittings must be removed from the heating sleeve and heating head at the same time, and quickly and evenly inserted into the marked depth in a straight line without rotation, so as to form a uniform flange at the joint;
8)Within the specified processing time, the newly welded joint is allowed to be corrected immediately, but rotation is strictly prohibited.
9)Within the specified cooling time, the pipes and pipe fittings shall be well supported to prevent them from torsion, bending and tension
3.Precautions
1) The heating time of this table shall be adjusted according to the product manual of hot-melt machines and tools and the construction ambient temperature. If the ambient temperature is less than 5 ℃, the heating time shall be extended by 50%.
2. When welding elbow or tee, pay attention to its direction according to the requirements of design drawings, and mark its position with auxiliary signs in the linear direction of pipe fittings and pipes.
3) When connecting, insert the pipe end into the heater rotationally and insert it to the marked depth. At the same time, push the pipe fitting onto the heating head without rotation to reach the specified mark. After reaching the heating time, immediately remove the pipe and pipe fittings from the heating sleeve and heating head at the same time, and quickly and evenly insert the straight line without rotation into the marked depth to form a uniform flange at the joint. Within the processing time specified in the above table, the newly welded joint can also be corrected, but rotation is strictly prohibited.
4)The cutting diameter of the selected pipe cutter shall be suitable for the diameter of the pipe to be installed and cut.