Geo-Flo Products’ NP Multi flow center is designed for applications with three to five geothermal heat pumps (up to 25 to 30 tons) with factory assembled heat pump manifolds, isolation valves, Ts and flush ports. A choice of variable-speed pumping (a zone valve is installed for each heat pump) or constant-speed pumping with a pump(s) for each heat pump provides application flexibility. By incorporating flushing valves into the flow center, the ground loop may be flushed without adding external flush ports.