How open gas meter valve

Natural gas meter can be divided into several, one is the common gas meter, that can not install the battery, with only a mechanical counter, then this is not the inner table of the valve to shut you breathe it, you must use gas valve table after table or in front, the other is intelligent gas meter with LCD display, you must install the valve, usually such a table is prepaid, then this internal table are valves in your inner table there is the case of the remaining gas, the valve has been opened, if there is no remaining volume in the table when the valve will automatically close. This time you have to recharge in order to open the valve, but if you really need to close the valve, you can remove the battery, this time, the valve will be closed within a table.