Advantage features: the water inlet and drainage device of the buried eye washer are installed below the permafrost. Open the valve and the tap water flows into the eye washer system from the underground water inlet. When the valve is closed, the system can automatically empty the water in the eye washer pipe. Applicable to the winter below 0 degrees of the area, the depth of the permafrost is greater than 500MM to use, really play the anti-freezing effect.
