... Solar Working station for solar water heater. 2.Digital flow meter 3.110/220 rs15/6 pump 4.Energy ... Split and Pressure system, which set the flow control, heat cycle, the exhaust, pressure control, temperature display, the transfer liquid injection / ... Solar circulation pump speed adjusting(RPM speed controlling)Digital flow meterOHQM OHQM Thermal energy measuringINTV INTV Pump interval ...