1.Through a set of automatic control devices, it is ensured that the liquid controller or the high, medium and low electrode probes feedback control the opening and closing of the water et by the pressure relay changes with With the continuous output of steam, the water level of the furnace continues to drop.

2.When it is at a low water level (mechanical type) or  a medium water level (electronic type), the water pump automatically replenishes water, and when it reaches a high water level, the water pump stops replenishing water; The tube continues to be heated, and steam is continuously generated,