Used in underground water supply systems. Installed buried, on a concrete base, above the well. The pump and/or other related equipment are installed inside. The flat area at the base of the chamber is drilled with a drill and a core bit. The well pipe passes vertically through the cutout. Sealing is done with a Kompact series rubber gasket. The water pipe from the pump/equipment runs horizontally. Passage through the wall must be made through the flat surfaces and not on the rib, maximum passage diameter D 125 mm. Component elements: chamber, lid and locking system. The chamber and lid are manufactured by rotational molding process from polyethylene, blue color, with: -average outer diameter: 1430 mm -base diameter: 1500 mm -access: 640 mm. The locking system consists of two locks positioned diametrically opposite on the lid and an operating key. The lock is mounted so as not to affect the sealing in the lid area.