Bosch Thermotechnology’s geothermal flow centers are built for easy, time-saving installation and are available in a vari-ety of combinations to suit the contractor or system designer’s needs. They are available as pressurized, nonpressurized and nonpressurized dual circuit. All flow centers come with a 10-year limited warranty. They are offered with con-stant-speed and variable-speed pump options. Front flush ports allow easy access during installation. Flo-Link double O-ring fittings eliminate leaks and simplify installation. Bosch Thermotechnology.