March’s proven magnetic drive eliminates the troublesome, old-fashioned shaft seal. There can be no seal wear, power-robbing friction or leakage through the seal. Impeller and drive magnets are permanent ceramic type. They prevent slippage and insure that full motor horsepower is converted into pumping power.
Energy requirements are lowered, as all the energy produced by the motor is utilized, especially important in solar systems.
March seal-less drive also provides for faster, easier motor service, as the motor can be removed without draining or refilling. Their low-starting current and high efficiency make them excellent for stand-alone solar circulators. |