Open Buffer Circulation System

Structural features

The system is an open cycle. The system return water is depressurized in the water tank or buffered by a high-level water tank. The water pump is at zero pressure every time from the suction port. It is suitable for systems with low pump head and low system pressure requirements.

Closed Pressure Stabilizing Circulation System

Structural features

The system is a closed loop, there is no pressure relief point in the system, the liquid supply pressure is high can reach 0.5-1.0MPa. It is suitable for systems with high system pressure and use water points at high place (such as the use water points placed on the roof), which can save 20-80% of pump motors’ power consumption. The system can do flow-pressure difference or flow-temperature difference control. When the water service load changed, the operating frequency of the water pump can be automatically adjusted, which can save power consumption while ensuring that the water pump is at the ideal operating point to protect the water pump.