Overview: The FreFlow self-priming centrifugal pumps by SPX Process Equipment are designed for handling contaminated and low-viscosity liquids. These pumps are known for their excellent self-priming ability, eliminating the need for a non-return valve, and ensuring easy operation and maintenance.

Specifications: FreFlow pumps are available in cast iron, bronze, or stainless steel, with the stainless steel version being ideal for aggressive and corrosive liquids. The range includes 20 pumps with connections from 32 mm to 150 mm, a capacity of up to 300 m³/h, and a delivery head of up to 70 meters. The maximum system pressure is 9 bar, and they can handle liquids with a viscosity of up to 150 mPa.s.

Applications: FreFlow pumps are suitable for various industries including chemical, petrochemical, pharmaceutical, oil, gas, electricity generation, paper, plastic, paint, metal finishing, and shipbuilding. They are particularly effective in marine applications such as bilge and ballast pumping and fire fighting.

Operating Principle: The self-priming operation is based on the injection principle, where air in the suction pipe is drawn into the pump, compressed, and separated from the liquid, ensuring smooth operation.

Technical Data: The pumps can be coupled to different drive systems including flange motors, bearing brackets, IEC standard motors, and petrol or diesel engines, offering flexible operation.