the "D" grade is easy to bend, the "C" grade is more difficult to bend, and the "B" grade is hardest to bend. Copper is one of the most difficult metals for plumbing to manufacture and solder. Its softness and brittleness allows it to be soldered to other metals, such as brass, which makes it convenient for fixtures to have copper pipes. Copper piping is cheap and effective, but it is susceptible to becoming damaged and may not last as long as polybutylene pipe.
Copper piping is often exposed to acids, particularly in environments with acidic water. Any processors that will corrode copper will also corrode CPVC. However, most corroding agents affect both copper and CPVC. If copper comes in contact with CPVC it will oxidize it and make it brittle. Acidic catalysts used to make polyester and polycarbonate plastics will also attack copper and turn it into a more acidic substance. This is the most common cause of acid corrosion . CPVC and copper should be well-sealed with corrosion-resistant epoxy. There are chlorine-containing compounds that will not damage copper piping. These include tetraethylenepentamine, trichloroethylene, triethylamine, diethylinormal, pyridine, and triethylamine. Heat. Even though copper is often associated with cold water systems, it becomes more brittle when exposed to heat. It is just as susceptible to corrosion in the presence of mineral salts as in the presence of acids . It is important to protect the supply line from incoming water to prevent the water from increasing the solution of magnesium and calcium in the softening water. A separate drain line from the cold water supply should be used to drain this water. A shut-off valve should be used for the drain line to be isolated from incoming water .
If there are elevated alkali levels, such as salts of calcium, in the water, there is a possibility that the internal CO2 in the product water will migrate past the CO2 cartridge, and react with calcium in the water. The result of this reaction is to precipitate the insoluble calcium carbonate, which the product water will then carry with it into the sump. d2c66b5586