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SUBMERSIBLE PUMPS IN SALTWATER: A FEW KEY POINTS TO CONSIDER. Generally, a submersible pump can be used in saltwater, but proper selection and precautions are necessary to ensure durability and performance. This includes using a pump specifically designed for saltwater and taking steps to prevent corrosion.
Choosing a Saltwater-Resistant Pump
When selecting a submersible pump for saltwater use, look for a model with a stainless steel or titanium construction, as these materials are more resistant to corrosion. A 316 stainless steel pump, for example, can withstand exposure to saltwater with minimal risk of corrosion. Be sure to check the pump’s specifications for a saltwater rating.
Installation and Maintenance Considerations
To ensure the pump’s longevity, install it in a well or tank with a secure, watertight seal to prevent saltwater from entering the motor or electrical components. Regular maintenance is also crucial, including cleaning the pump’s impeller and checking for signs of corrosion.
Pump Selection for Deep Water Wells
For deep water wells, a submersible pump with a high head capacity is required. For example, a 4-inch submersible pump with a head capacity of 500 feet or more may be suitable for a well that is 300 feet deep. When selecting a pump for a deep well, consider the total dynamic head (TDH) of the well, including the height of the water column, friction losses, and any other factors that may affect the pump’s performance.
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