The Meibes Meiflow TOP S UC DN 25 pump group is designed for an unmixed heating circuit and cylinder charging. It is supplied as a complete assembly with a Grundfos Alpha 2.1 25-60 circulating pump, two ball valves and high-quality EPP insulation to reduce heat losses. The group includes integrated contact thermometers in the ball valve handles, a fitting for an immersion sensor in the pipework, and a wall mounting bracket. On the return line there is a ball valve with a manually isolatable non-return valve to prevent backflow. The design also allows the flow and return sides of the pipework to be swapped.