The hazards of white ppr pipes for water supply on exterior wall

1. easy to age;

2. Easy to transmit light, causing water quality changes in the tube (oxidation, breeding of bacteria, etc.

3. Easy to expand and contract.

Therefore, PPR pipes are generally not installed on the outer wall. It's better to use a dark color tube, such as green (I think green is better than gray)

In fact, in terms of quality, PPR is really not the best choice among many water pipes. If it is a water supply pipe, consider steady-state PPR or aluminum-plastic PPR.