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Its main purpose is to protect the underground well and the water supply equipment installed in it from atmospheric precipitation (surface water) and the effects of low temperatures in winter. Metal caisson with round cross-section and neck. Material – steel 20. Wall thickness 3 mm. It is possible to install a hydraulic accumulator with a capacity of up to 100 liters. ,5 meters. Neck diameter ― 62 cm. Caisson diameter ― 1 m