4 Hp Pumps
4 Hp Pumps
With faster fill times during peak hours and power savings during non-peak hours, FE PETRO® 4 Hp variable speed submersible pumps deliver maximized profits while mitigating operating expenses.

WE SET THE STANDARD
FE PETRO® brand submersible pumping systems set the standard by which all other fuel pumping systems are measured. With best-in-class flow rates and backed by a long history of dependability, FE PETRO® pumps are responsible for delivering fuel to thousands of customers around the globe, day in and day out.

With faster fill times during peak hours and power savings during non-peak hours, FE PETRO® 2 Hp and 4 Hp variable speed submersible pumping systems allow you to maximize profits while mitigating operating expenses.
CONVERT TO VARIABLE SPEEDHigher Flow Rates
The MagVFC™ variable speed controller ramps the STP up and down as-needed to provide optimal flow rates at all fueling points. The result is faster, more consistent flow rates than fixed speed systems at virtually the same cost of ownership.
Energy Efficient
Because a variable speed system is constantly providing only the necessary power to achieve desired flow rates, the system only consumes as much energy as is needed. Get energy savings during non-peak business hours and increased flow during peak hours.
Minimize Hydraulic Hammer
Hydraulic hammer is a sudden pressure spike resulting from a stoppage in flow that can be exaggerated in fixed speed pumping systems. A variable speed system significantly minimizes the effects of hydraulic hammer like accelerated wear on equipment.

Available as an option on AG compatible submersible turbine pumps, Advanced Protection defends STPs from accelerated corrosion caused by the acedic byproduct of microbial activity.


It’s always been about filling cars faster. Maximize your flow rate capabilities and your potential throughput and profits with our patented MagShell™. By expanding the pump motor shell, the MagShell™ increases the area for product flow by 45%.


Turbine Pump Interface is a powerful tool that creates a network between your FE PETRO® STP controllers and EVO™ Series ATGs. Through TPI, the tank gauge can be programmed to respond to faults in the submersible pumping system and react with intelligence that pump controllers alone cannot.
SEE TPI IN ACTIONPump In Water Automation
When the water level in a tank approaches the pump intake, the tank gauge will enter alarm mode and automatically shut down the pump, protecting the system and con
Leveling & Priority Modes
When managing two storage tanks of the same product ‘Leveling Mode’ can keep both tanks at the same percentage full without the use of a syphon bar between the two tanks.
Remote Pump Interaction
By networking the intelligent controllers to the fuel management system via TPI, a technician can remotely connect to the site to review the logged event history and view the status.

An Intake Filter Screen (IFS) provides fuel filtration for the entire system down to about the size of a grain of sand (0.009” openings). It’s designed to keep harmful debris, sediment, and tank corrosion from entering the pumping system and creating service events including dispenser filter changes.

Intake Filter Screens
4" Submersible Pump Components & Key Dimensions

1. Manhole
2. Leak Detector
3. Manifold
4. Containment Sump
5. 4" Riser
6. Tank Adapter
7. Tank Manway
8. Column Pipe
9. Variable Length Coupler
10. Pump Motor Assembly (PMA)
11. End bell
12. Line Test Port, ¼" NPT
13. Leak Detector Port, 2" NPT
14. Syphon Port, ¼" NPT
15. Tank Port, ¼" NPT
16. Riser Pipe, 4" NPT
17. Discharge Outlet, 2" NPT
Notes:
1. Effective tank diameter (ETD) = Inside tank diameter (to top of 4" bung), including tank manway and/or sump adapter.
2. Model length (A) = ETD plus riser length minus bottom clearance minus 1" thread engagement.
3. Riser length (B) = Bury depth (to top of tank) minus pump head clearance minus tank manway and/or minus sump adapter.
Optional Features
Biofuel Compatibility
FE PETRO® pumps are UL listed with both UL79A (up to 85% Ethanol) and UL79B (up to 20% or 100% Biodiesel).
Advanced Protection
Stop corrosion in its tracks. Special powder-coated, e-coated, and stainless steel components defend your pump in the tank and in the sump from accelerated corrosion.
Turbine Pump Interface
Remote enhanced pump monitoring and control including pump-in-water automation, clogged intake escalation, tank leveling, and tank priority.
Intake Filter Screen
Avoid system damage, pumping slowdowns, and reduce filter changes by keeping harmful tank debris, sediment, and corrosion from entering the pumping system with this factory-installed option.
Standard Features
Variable Speed
With faster fill times during peak hours and power savings during non-peak hours, variable speed submersible pumping systems allow you to maximize profits with consistent flow rates while mitigating operating expenses.
MagShell®
The patented stainless steel MagShell® is designed to maximize flow rate capabilities, potential throughput, and profits. By expanding the pump motor shell, the MagShell® increases the area for product flow by 45%.
Variable Length
The patented telescoping pump shaft lets installers adjust the length of the pump onsite for the perfect fit.
Active Air Eliminator
FE PETRO® STPs come standard with active air elimination, which eliminates air through the highest point in the pump head at all times when the pump is running, assuring air does not pass into discharge piping.
Safety and Ease of Maintenance
FE PETRO® STPs include a contractor electrical disconnect, which requires loosening only one bolt, allowing motor wiring to be disconnected without venting the dangerous tank vapors into the sump when servicing FE PETRO® submersible products.
Simple Servicing
If ever required, the pump can be easily removed from the tank by unthreading three bolts. There is no need to disconnect the syphon system or to remove the leak detector from the system to service the STP.
Manual Pressure Relief
As a standard FE PETRO® feature, a vent screw is provided to bleed line pressure to zero when necessary. By turning this screw, product is diverted back to the tank, dropping line pressure to zero. This reduces fuel discharged into the sump manhole or dispenser pan during servicing, further protecting service technicians and the environment.
Outlast, Outperform with Franklin Electric Inside
FE PETRO® STPs are powered by the legendary Franklin Electric motor and built for long term performance. Franklin Electric-powered submersible pumps provide maximum uptime and a proven track record in the fueling industry that spans more than four decades. They feature best-in-class flow rates and a long history of dependability.
Quality Certification
Franklin Fueling Systems is an ISO 9001 Certified Manufacturer.
General
- Variable speed models are available in variable lengths only.
- Check valve: 2¾" (70mm) diameter fluorocarbon seal constructed with 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 (2.8 bar) and resets above 35 psi (2.4 bar).
- Syphon: venturi-type syphon primer supplied with every submersible. Syphon check valve and secondary syphon sold separately.
- Air eliminator: every submersible includes a tank return path with one-way check valve to provide active air elimination.
- Electrical disconnect: electrical yoke for positive contractor disconnect during service.
Pump Motor
- 4 Hp, variable speed, two-stage centrifugal type pump motor with integral, automatic, thermal overload protection.
- 60 Hz Max. pressure: selectable operating pressure on MagVFC™ between 24 psi and 42 psi deadhead.
- 50 Hz Max. pressure: selectable operating pressure on EcoVFC™ between 1.65 bar and 2.90 bar deadhead.
- Available with MagShell® which results in 45% increased flow area around motor.
60 Hz Power Requirements
- Variable speed pumps can only be controlled by a MagVFC™ variable frequency controller.
- VS4 models require three-phase incoming power supply to the MagVFC™ for proper operation.
- Incoming power supply to the MagVFC™ can be 200-250 VAC, 50 or 60 Hz.
- MagVFC™ outputs a three-phase, variable frequency signal, valid for FE PETRO® variable speed pumps only.
- MagVFC™ max. line draw: 20 Amps.
- Max motor draw: 15 Amps.
Liquid Compatibility
- Max. liquid viscosity: 70 SSU at 60 °F (15 °C).
- STP variable speed models are UL listed for fuel mixtures containing up to 10% ethanol, and 20% MTBE, 20% ETBE or 17% TAME with gasoline.
- IST/ISTAP variable speed models are UL and cUL listed 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.
- All variable speed models can also be used 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.
Approvals
- cULus listed.
- Consult factory for applicable approvals.
4 Hp Variable Speed Pump Performance Chart - 60 Hz
For 50 Hz performance charts, please see the 50Hz-Submersible Turbine Pumps-Datasheet in Downloads.


4 Hp Submersible Pump Ordering Guide
A typical turbine model designation has up to five components to define the pump being supplied as follows:
XXX YYYYY Z - A - B
XXX = Basic Model Designation
STP = These standard variable speed and variable length models are capable of up to 10% ethanol with gasoline
IST = These variable speed and variable length models include alcohol-gasoline compatibility (up to 85% ethanol, up to 20% Biodiesel, or 100% Biodiesel).
ISTAP = These variable speed and variable length models include alcohol-gasoline compatibility (up to 85% ethanol, up to 20% Biodiesel, or 100% Biodiesel) and Advanced Protection with powder-coated, e-coated, and stainless steel components.
YYYYY = Factory Installed Options
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 (24 psi relief/22 psi reset for PLLD)
W* = Model W check valve (16 psi relief/13 psi reset for PPM4000)
Z = Pump Motor Horsepower Rating
VS4 = 4 Hp variable speed
A = Model Length
VL1 = STP variable length range #1 (64" - 92")
VL2 = STP variable length range #2 (95" - 156")
VL3 = STP variable length range #3 (127" - 218")
B = Riser Pipe Length (see diagram)
Riser pipe length is expressed as two numeric characters that indicate the total length of the riser in inches. Riser pipes are available from 7" to 60" in 1" increments (additional charge for risers 31" or longer).
Notes:
*If not otherwise specified, all models are supplied with standard model check valve (40 psi relief / 35 psi reset for MLD, TS-LS300, and TS-LS500).
Intelligent submersible turbine pump specific accessories - 60Hz
Model Number | Description |
---|---|
400137908 | Syphon check valve, alcohol-gasoline compatible (when ordered with STP/IST) |
402459931 | Model 65 PSI (4.5 bar) relief check valve (AG compatible for slave of manifolded STPs with Veeder Root™ PLLD) |
402507930 | Secondary syphon kit (when two syphon primes are required for one STP or IST) |
5800300100 | STP-DHI, dispenser hook isolation for 110 Volt dispenser handle switches, up to eight each |
5874202800 | MagVFC™, 200-250 VAC, 50-60 Hz, one required per STP or IST |
Intelligent submersible turbine pump specific accessories - 50Hz
Model Number | Description |
---|---|
400137937 | Syphon check valve, alcohol-gasoline compatible |
402459931 | Model 65 PSI (4.5 bar) relief check valve (AG compatible for slave of manifolded STPs with Veeder Root™ PLLD) |
402507930 | Secondary syphon kit (when two syphon primes are required for one STP or IST) |
5800300200 | STP-DHIB, dispenser hook isolation for 240 Volt dispenser handle switches, up to eight each |
5874202800 | MagVFC™, 200-250 VAC, 50-60 Hz, one required per STP or IST |
5874202900 | EcoVFC, 360-440 VAC, 50-60 Hz, one required per STP or IST |
Featured
Brochures
Title | Type | Size | |
---|---|---|---|
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FFS-0796 Submersible Turbine Pumps Datasheet.pdf | 4.84 MB | |
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FFS-0801 (50Hz) Submersible Turbine Pumps Datasheet.pdf | 4.72 MB |
Catalogs
Title | Type | Size | |
---|---|---|---|
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FFS-0216 (UL) FFS Product Catalog.pdf | 20.25 MB | |
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FFS-0219 (EN) Submersible Systems Catalogue.pdf | 4.67 MB |
Manuals
Title | Type | Size | |
---|---|---|---|
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400604005 STP-IST Installation Guide.pdf | 2.76 MB | |
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400289002 PMA Replacement Guide.pdf | 1.23 MB | |
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MagVFC Variable Frequency Controller Installation & Owner's Manual.pdf | 1.54 MB | |
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228001102 Eco VFC Installation Guide.pdf | 1.28 MB |