Quick Answer
Suction lift limitations for different jet pump models vary depending on the manufacturer and specific model, but generally range from 10 to 30 feet, with some high-pressure models able to lift water from depths of up to 90 feet.
Suction Lift Limits by Jet Pump Model
Most conventional jet pumps have suction lift limits, ranging from a low of 10 feet for small residential pumps to 30 feet for medium-duty pumps. High-pressure models, like the Franklin Electric Super Viking, can lift water from depths of up to 90 feet, but typically require more frequent maintenance and a more robust installation.
Factors Affecting Suction Lift Limitations
The suction lift limit of a jet pump is determined by its design, including the pump’s inlet size, motor size, and pressure relief valve. To determine the suction lift limit of a specific pump, you should consult the manufacturer’s specifications or consult with an experienced pump installer. Additionally, factors such as water temperature, viscosity, and the presence of solids can also affect the pump’s ability to lift water.
Installing Jet Pumps Beyond Suction Lift Limits
While it’s technically possible to install a jet pump beyond its suction lift limit, doing so can lead to reduced pump performance, increased energy consumption, and potentially catastrophic failure. If you need to lift water from a deeper well, consider using a submersible pump or a more powerful jet pump designed for deeper wells. Never attempt to modify a pump’s design or installation to exceed its recommended suction lift limit, as this can void the manufacturer’s warranty and create safety hazards.
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