Submersible Turbine Pumps

FE Petro introduced the first variable speed submersible pump for the petroleum industry in 1995. Since that time, high volume marketers around the world have realized the benefits of filling cars faster during peak business periods that only variable speed submersibles can deliver. Station size and volumes have continued to grow. To meet the needs of these high volume retailers, FE Petro offers the intelligent submersible turbine pump, the industry’s highest performing 4" diameter submersible pump.

Order Info
  • Highlights

    Constant Flow

    Depending on peak business requirements, marketers now have a choice of either 2 hp or 4 hp variable speed models. 2 hp provides constant 10 gpm (38 lpm) for up to eight fueling positions operating simultaneously, 4 hp for up to 12 positions.

    MagVFC™/ EcoVFC™ Design Highlights

    The MagVFC™ and EcoVFC™ feature a dual seven segment display to show diagnostic faults. A serial interface is standard to connect to INCON System Sentinel™ software for remote reporting of pump alarms and sharing other pump/ATG intelligence. The MagVFC™ and EcoVFC™ detect and display these system conditions:

    • Dry tank (initiates an immediate pump shut-down).
    • Continuous pump run.
    • Low incoming voltage.
    • Pump motor failure.
    • Short circuit detection.
    • Controller faults.
    • Open circuit detection.

    For reduced installation cost, a shielded power cable is not required. Pump protection extends pump life and extended run fault alerts a condition that may render line leak detection ineffective. Remote reporting of pump alarms and sharing of IST and ATG intelligence further reduce station operating costs.

    Meets EPA Spitback Control

    The IST can be adjusted at installation to perform at maximum per nozzle flow rate of 10 gpm (38 lpm) based on the specifications of your piping and dispensing system. This eliminates overpressuring the system, which results in an unnecessarily high hydraulic hammer and need for other control devices.

  • Specs

    Power Requirements

    IST models can only be powered by a MagVFC™ controller:

    • 2 hp models can operate with single phase incoming power supply to the MagVFC™.
    • 2 hp and 4 hp models operate with three-phase incoming power supply to the EcoVFC™.
    • Incoming power supply to the MagVFC™ can be 200-250 VAC, 50 Hz and 360-440 VAC, 50 Hz for the EcoVFC™.
    • MagVFC™ outputs a three-phase, variable frequency signal, valid for FE Petro variable speed pumps only.
    • 2 hp max. motor draw: 9 Amps.
    • 4 hp max. motor draw: 15 Amps.
    • MagVFC™ max. line draw: 20 Amps.

    Pump Motor

    • 2 hp or 4 hp, variable speed, two-stage centrifugal type pump motor with integral, automatic, thermal overload protection.
    • Max. flow: 2 hp = 110 gpm, 4 hp = 140 gpm.
    • Max. pressure: selectable operating pressure on MagVFC™ between 24 psi and 42 psi deadhead.
    • Available with MagShell™, which results in 45% increased flow area around motor.

    Liquid Compatibility

    • Max. liquid viscosity: 70 SSU at 60 °F (15 °C).
    • IST models imply alcohol-gasoline compatibility for fuel mixtures containing diesel fuel with up to 20% biodiesel, 100% biodiesel, up to 85% ethanol with gasoline, and 20% MTBE, 20% ETBE or 17% TAME with gasoline.
    • IST models can also be used for fuel mixtures containing up to 5% biodiesel, with diesel fuels, fuel oils, kerosene, Avgas and jet fuels in a non-gelled pourable state.
    • All wetted elastomers are made of a high grade, fluorocarbon compound.

    Standard Features

    • All IST models include variable speed, variable length options and alcohol-gasoline compatibility.
    • Check valve: 70mm diameter fluorocarbon seal constructed on cast aluminum body and steel backing washer.
    • Pressure relief valve: available in four pressure relief settings, integral to check valve. Standard model relieves at 40 psi and resets above 35 psi.
    • Syphon: venturi-type syphon primer supplied with every submersible. Syphon check valve and secondary syphon sold separately.
    • Air eliminator: every submersible includes tank return path with one-way check valve to provide active air elimination.
    • Electrical disconnect: electrical yoke for positive contractor disconnect during service.


    • Consult factory for applicable approvals.

    Quality Certification

    • Franklin Fueling Systems is an ISO 9001 Certified Manufacturer.
  • Order Info

    Intelligent Submersible Turbine Pumps

    (variable speed, variable length, AG compatible)

    ModelDescriptionModel Length Range NumberModel Length Range*
    IST-12 hp AG variable speedVL11486 mm - 2228 mm
    IST-22 hp AG variable speedVL22274 mm - 3835 mm
    IST-32 hp AG variable speedVL33087 mm - 5429 mm
    ISTVS4-VL14 hp AG variable speedVL11613 mm - 2355 mm
    ISTVS4-VL24 hp AG variable speedVL22401 mm - 3962 mm
    ISTVS4-VL34 hp AG variable speedVL33214 mm - 5556 mm
    • Notes:
    • 1. All above models are compatible with fuel mixtures containing up to 85% ethanol with gasoline, diesel fuels, and 20% MTBE, 20% ETBE or 17% TAME with gasoline.
    • 2. All models are supplied with a standard check valve unless factory option “R” or “W” is specified.
    • 3. 4 hp models require EcoVFC with three-phase incoming power supply, 2 hp models can be powered by MagVFC or EcoVFC.
    • 4. 4" riser pipe, if supplied locally, must be 4½" OD by 3/16" WT tubing.
    • 5. STPAG models are UL listed for compatibility with fuel mixtures containing up to 85% ethanol with gasoline.
    • 6. For riser pipe lengths 787mm to 1753mm, additional charge applies (call customer service for lead times).
    • *Model length (A) defined as the dimension from turbine manifold bottom to pump motor inlet.
    • **4" riser pipe, if supplied locally, must be 4½" OD by 3/16" WT tubing.

    Factory Installed Approvals

    (may specify one in model number at time of STP order)

    (ATXF)Submersible Turbine Pumps with ATEX Flameproof approval for EN markets
    (RT)Submersible Turbine Pumps with ROSTEST approval for Eastern European markets
    • Note: If not otherwise specified, all models are supplied to UL approval as standard.
    • Consult Factory for other local approvals.

    Factory Installed Options

    (specified in model number at time of IST order)

    FFloating suction adapter, 1½" NPT female, must be factory installed
    KIFS (intake filter screen) factory assembled to pump motor assembly
    MMagshellTM (flow enhancing, expanded PMA shell)
    RModel R check valve, factory installed, for Veeder Root (*) PLLD Line Leak
    WModel W check valve, factory installed, for Red Jacket (*) PPM4000 Line Leak

    Field Installed Options

    (intelligent submersible turbine pump specific accessories)

    Part NumberDescription
    5874202800MagVFC™, 200-250 VAC, 50-60 Hz, one required per STP or IST
    5874202900EcoVFC, 360-440 VAC, 50-60 Hz, one required per STP or IST
    400137937Syphon check valve, alcohol-gasoline compatible
    402459931Model 65 psi (4.5bar) relief check valve (AG compatible for slave of manifolded STPs or ISTs with Veeder-Root™ PLLD)
    402507930Secondary syphon kit (when two syphon primes are required for one STP or IST)
    5800300200STP-DHIB dispenser hook isolation for 240 volt dispenser handle switches, up to eight each

    Intelligent Submersible Turbine Pump Model Designation System

    IST XXXXX Y - A - B

    A typical turbine model designation has up to five components to define the pump being supplied as follows:

    • IST = Basic Model Designation
    • Note: All IST models include the options of alcohol-gasoline compatibility, variable speed and variable length as part of the base model.
    • XXXXX = Factory Installed Options
    • IST model designations may include one or more of the following characters in alphabetical order:
    • F = Floating suction adapter (1½" NPT female adapter)
    • K = Intake filter screen (IFS, factory installed to PMA)
    • M = MagShell™ (flow enhancing, expanded PMA shell)
    • R* = Model R check valve (1.65 bar relief/1.52 bar reset for PLLD)
    • W* = Model W check valve (1.10 bar relief/0.89 bar reset for PPM4000)
    • *Note: If not otherwise specified, all IST models are supplied with standard model check valve (2.76 bar relief/2.41 bar reset for MLD, TS-LS300, and TS-LS500)
    • Y = Pump Motor Horsepower Rating**
    • VS4 = 4 hp variable speed
    • **Note: If not otherwise specified, 2 hp variable speed is implied.
    • A = Model Length
    • 1 = 2 hp variable length, 1486-2228mm
    • 2 = 2 hp variable length, 2274-3835mm
    • 3 = 2 hp variable length, 3087-5429mm
    • VL1 = 4 hp variable length, 1613-2355mm
    • VL2 = 4 hp variable length, 2401-3962mm
    • VL3 = 4 hp variable length, 3214-5556mm
    • Note: IST-2 and ISTVS4-VL2 models fit 94% of all known installations.
    • B = Riser Pipe Length
    • Riser pipe length is expressed as two numeric characters that indicate the total length of the riser in inches. Riser pipes are available from 178mm to 1753mm in 25.4mm increments (additional charge for risers 787mm or longer).
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