Svi lpg gas saver The cooking gas is passed directly through powerful magnets, placed inside the device. This increases the excitation level of gas molecules, causing their de-clustering. When the gas now comes out of svi, it burns with improved thermal efficiency. This unique process results in saving gas by upto 41%*. Uptill now the magnets were used to be placed outside the tube carrying gas, which gave low saving efficiency of the gas saver. The innovative feature of svi is that the gas comes in physical contact with the power packed imported rare earth magnets.