Hot Water Cylinder, Plan+Elevations AutoCAD DWG Block Collection Home / AutoCAD DWG Block Collection / Hot Water Cylinder, Plan+Elevations Hot Water Cylinder AutoCAD Block AutoCAD DWG format drawing of a hot water cylinder, 2D… Hot Water Cylinder AutoCAD Block AutoCAD DWG format drawing of a hot water cylinder, 2D plan and elevation views, DWG CAD block for water heating systems. Free DWG Download