The Regucirc is a product assembly with insulation for small circulation systems. The overall design creates a homogeneous whole. The combination consisting of a pump, circulation valve and insulation is installed in the return pipe of potable water systems. Its compact construction allows a space-saving installation. During development, function, shape and an economical use of material were taken into consideration. Design was restricted to essential requirements. All used materials can be recycled and are environmentally compatible.