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VARNA Products line of industrial pumps are a unique design called a whisper vane pump. They are positive displacement pumps rather than centrifugal. This makes them great primers and ensures that fluid can never vapor lock and stop moving through the circuit. The Whisper Vane design is also much more efficient than a gear pump for high-flow applications like coolant circulation, yet is it very quiet. The Whisper Vane pumps will lift at least one meter and prime quickly even after being completely drained dry. The pump and motor are directly coupled in a tightly integrated package. This keeps the unit small, making packaging easier and eliminating the downtime and maintenance headache of a traditional soft flex coupling. We build our pumps for a long hard life with zero maintenance.