Geo-Flo adds a new model to its NP Series non-pressurized systems for closed-loop geothermal applications. The NP Multi Flow Center is specifically designed for applications with three to five geothermal heat pumps with manifolds, isolation valves, and Ts and flush ports. The NP Multi features a high-density polyetheylyne tank, a heavy gauge powder-coated steel cabinet and a selection of variable-speed or constant-speed pumps.