Direct Drive Pond Pumps are more common to external pumps as they have the ability to draw water toward them. Direct drive pumps are appropriate for applications which require a significant amount of head height – such as pumping water upslope for a waterfall. They are generally more costly to operate than a magnetic drive pond pump, but in many cases they are the only choice when a substantial amount of water flow is needed. If you are purchasing a submersible direct drive pump, be sure that it is oil free, as leaking oil can harm pond fish and aquatic plants. Magnetic Drive Pumps: Magnetic Dive Pond Pumps (or Mag Drive Pumps) are usually designed as submersible pumps as most are unable to draw water into the pump. The power is created through an electromagnetic field which turns the impeller. Their main benefit is energy efficiency and a longer useful life. In addition, Mag Drive pond pumps are easy to repair as typically all that is needed is a magnetic shaft and impeller (the only moving parts). The downsides are they cannot provide sufficient water flow for high head applications, and they are slightly more expensive than direct drive pond pumps. In general, if you do not have a high head requirement and are looking for a submersible pump, the magnetic drive pond pump is the best choice.
Company Resource: Heat Pump, Household Heat Pump, Swimming Pool Heat Pump
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