Water heater expansion tanks were introduced in the late 1950s. Before that, residential water heaters were designed as “closed systems,” where water was stored in a single tank without any way of accommodating the thermal expansion of the water in it. This expansion can lead to pressure bui...
A thermal expansion/surge reduction water tank includes a hollow housing with a bladder sealed to an inside of the housing forming two compartments therein. A compressed air inlet i
, the liquid barrier in the expansion tank will not prevent the introduction of water vapor into the engine coolant chambers, but rather will absorb water. The introduction of water into the coolant causes an increasing rate of degradation of the coolant, with the production of acids (oxsolic...