PPR internal wire diameter change directly refers to a type of ppr pipe fittings used to connect PPR pipes of different diameters, which can achieve seamless connection of pipes of different diameters in the pipeline system, ensuring the stability and sealing of the pipeline system. One end is made of stainless steel structure with internal threads, mainly connected to threaded pipes or valves, while the other end is connected to PPR water pipe, PVC water pipe, HDPE water pipe by hot melt or electric melt.

Connection principle
    PPR inner wire diameter change is usually made of high-quality polypropylene (PPR) material, which has good corrosion resistance, high temperature resistance, and pressure resistance. Its design allows for a smooth transition from a large diameter to a small diameter or from a small diameter to a large diameter, reducing fluid resistance and improving the transmission efficiency of the pipeline system.

Installation steps

1. Preparation work: Firstly, prepare the PPR inner wire diameter directly and the corresponding PPR pipe to ensure that the specifications of the ppr fittings and pipes match.
2. Cleaning pipes: Before connecting, it is necessary to clean the connection parts of pipes and fittings to remove any dust and foreign objects.
3. Hot melt connection: Use a dedicated hot melt machine to heat pipes and fittings, and the heating parameters must meet the technical requirements of the hot melt machine. The heating time usually ranges from a few seconds to a few minutes, depending on the diameter and wall thickness of the pipe.
4. Quick connection: After heating is complete, quickly connect the pipe and fittings, being careful not to rotate, but to insert them evenly in a straight line to the predetermined depth, forming a uniform flange.
5. Cooling and solidification: After connection, wait for the pipes and fittings to completely cool and solidify to ensure the firmness of the connection

Application scenarios
    PPR internal wire diameter change is widely used in fields such as construction, water supply and drainage, HVAC, industrial pipelines, etc. It can be used for household water supply systems, public drainage systems, and other industrial systems that require connecting pipes of different diameters.