Water pressure tanks with carbon steel tank

Carbon steel

— a relatively simple and inexpensive type of steel. At the same time, this alloy is strong and reliable; it is resistant to temperature extremes and high pressures. The main disadvantage of carbon steel is that it is inevitably susceptible to corrosion from contact with water. However, for water pressure tanks, this point does not really matter, because in them it is not water that contacts the tank walls, but an elastic balloon. In expansion tanks, in turn, various solutions can be used to protect the inner walls — for example, special coatings. And even without such coatings, the tank rusts rather slowly, its service life is usually calculated at least for years, and little rust is released into the coolant. Therefore, most modern auxiliary tanks are equipped with carbon steel tanks (for additional reliability, individual elements in such models can be made of stainless steel).