Water treatment unit, preventing scale formation

摘要

The water treatment unit, for a flowing water supply, is a tube or hose in a spiral where the coils arranged round the central axis in the shape of a truncated cone with a circular base. The outer dia. of the outermost coil is equal to or smaller than the inner dia. of the tube or hose. The water flows coaxially through the radially increasing coils of the spiral.. The spiral is of V4-A fine steel.