A steam boiler cannot add water to the boiler. In this case, we must first understand whether the local water quality is too hard.

In many places, the water quality is too hard to scale, which leads to the blockage of pipes in steam boilers, which may seriously lead to tube explosion. If the steam boiler produces too much scale, it will affect the heating area of the boiler, and there will be a lot of water in the steam. The user said that he installed soft water equipment and there was no scale in the steam boiler. There should be something wrong with the check valve. Later, when I opened it, it was true that the check valve was stuck by something. Rinse with clean water after taking out, and add water normally.