Can the water in the valve well freeze in winter?

Yes. According to the information about the valve, it was found that there is water in the valve well that can freeze in winter. In winter, due to the cold and dry weather in the northern region, when the valve manhole cover is not insulated, cold air enters the valve well through the valve manhole cover, causing the liquid in the valve to freeze. The freezing of the liquid causes damage to the valve.