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Q: What function does a Submersible Turbine Pump perform?
A: A Submersible Turbine Pump (STP) transfers fuel from aboveground or underground storage tanks to fuel or DEF dispensers. When activated, impellers in the STP motor spin, creating centrifugal force that pushes fuel up through the STP, the piping system and to the dispensers.
Q: What design criteria should be considered when selecting an STP?
A: Flow rate: Ensure the STP has enough horsepower to consistently handle the fueling operation’s highest throughput.
Fuel compatibility: Ultra Low Sulfur Diesel and higher ethanol blends such as E15 and E85, increase the risk for corrosion. Stainless steel and specialty coatings help prevent STP degradation.
Intake height: STPs come in fixed-length or telescoping designs. Fixed length requires precise measurement to ensure the pump can reach the maximum amount of fuel. Telescoping STPs allow for on-site length adjustments.
Fixed or variable speed drive: The type of drive best suited for an operation is largely influenced by the site’s average demand for fuel. High-volume truck stops, for example, often benefit from variable speed drives that maintain a constant pressure and help eliminate hydraulic hammer.
Q: What brands of STPs does Source North America supply?
A: We supply FE PETRO® STPs from Franklin Electric Fueling Systems and Red Jacket® STPs from Veeder-Root.
Q: How do I order an STP?
A: Contact your local Source representative or visit U.
