The new NP series non-pressurized flow center raises the bar for non-pressurized applications. Building upon Geo-Flo’s 3-way flushing valves with Flo-Link connections, the NP series reduces installation time, and increases reliability. In fact, by incorporating flushing valves into the flow center, the ground loop may be flushed without adding external flush ports, saving installation time and additional cost. Plus, piping becomes much simpler. Optional - Flo-Link double O-ring include transition fittings for most any application (PE fusion, PVC,threaded, etc.). Top or side connections to the heat pump and ground loop add even flexibility.