Model SMA 63/64 - Automatic Minimum Flow System Brochure

The SMA 63/64 automatic minimum flow system is a protective pump fitting. It automatically protects centrifugal pumps against damage that may occur as a result of the partial evaporation of the pump content when the pumps are operated under low load. As soon as the main pump flow falls below a predetermined value, the valve opens the bypass and safely drains the minimum volume, even if the pumping volume in the main flow direction drops to zero.