Can ppr pipes be mixed with other pipes?

PPR (polypropylene random) and PEX (cross-linked polyethylene) pipes are two of the most commonly used types of plastic pipes in plumbing systems. PPR pipes are typically used for hot and cold water distribution while PEX pipes are mostly used for radiant heat systems and hot water distribution. A question that arises is whether these two types of pipes can be mixed in the same plumbing system.

The answer to this question is generally no, PPR pipes should not be mixed with PEX pipes. This is because these two types of pipes have different properties and may not be compatible with each other in terms of fittings and connections. PPR pipes have a different diameter than PEX pipes, which makes it difficult to connect them using the same fittings or adapters.

Furthermore, PEX pipes are more flexible than PPR pipes, which can cause issues when connecting them to fittings designed for rigid PPR pipes. When PEX pipes are installed in a plumbing system, it is usually necessary to use specialized fittings and connections that are designed specifically for PEX pipes.

Another consideration is the temperature of the water flowing through the pipes. PPR pipes are designed 

to withstand high temperatures, while PEX pipes are not. If PEX pipes are used in a system that carries hot water, they may become weakened and brittle over time, leading to leaks and other issues.

In summary, while PPR and PEX pipes may look similar, they are not interchangeable in a plumbing system. PPR pipes should not be mixed with PEX pipes, and it is important to use the appropriate fittings and connections for each type of pipe. If you are unsure about which type of pipe to use for your specific plumbing needs, it is always best to consult with a professional plumber or plumbing supplier for advice.