Franklin Fueling Systems · Submersible Pumps
FE PETRO® 6" High Capacity 3 and 5 Hp Pumps
Three-phase multi-stage submersible pumps for high volumes and fast deliveries of gasoline or diesel

Overview
When a site needs more than a 4" pump can give, such as truck diesel lanes or very high-volume gasoline, Franklin's 6" FE PETRO high capacity pump takes over. It comes in 3 Hp (STP3C) and 5 Hp (STP5C) versions, both fixed speed and three-phase on 380-415 VAC, 50 Hz, running at 2875 rpm with a multi-stage centrifugal pump and built-in automatic thermal overload protection.
The motor is a continuous-duty three-phase Franklin Electric unit with carbon bearings and stainless steel journals. Impellers are moulded acetal, diffusers hard-coated aluminium and the shaft stainless steel, and a mesh screen on the inlet keeps large particles out. The discharge head has two opposed 3" horizontal outlets, two built-in line check valves and two pressure relief valves that protect dispensers, meters and piping from thermal expansion; the standard relief opens at 2.76 bar and resets above 2.41 bar. The pump mounts on a 6" riser pipe.
Service is designed to be quick. Large pins and sockets break the electrical circuit automatically when the extractable section is lifted, so motor work does not need an electrician on site, and the pump motor assembly comes off the discharge head with four bolts and pusher bolts. Pumps are built to the tank as fixed-length models from 1524 to 5080 mm. Control is by a TPGC-380 Guardian three-phase controller or an STP-CBB3C or STP-CBB5C starter, and the MLD-HC detector provides line leak detection. Apex supplies, installs and services high capacity pumps.
Key features
- 3 Hp and 5 Hp, three-phase 380-415 VAC, 50 Hz
- Multi-stage centrifugal pump at 2875 rpm
- Continuous-duty motor with carbon bearings and stainless steel journals
- Dual opposed 3" discharge ports with two built-in check valves
- Two pressure relief valves protect against thermal expansion
- Wiring disconnects automatically when the pump is extracted
- Built to tank length, 1524 to 5080 mm
- Compatible with high capacity mechanical leak detectors
Specifications
FE PETRO® 6" High Capacity 3 and 5 Hp Pumps technical data
| Model | Rating | Supply | Speed |
|---|---|---|---|
| STP3C | 3 Hp | Three-phase 380-415 VAC, 50 Hz | Fixed, 2875 rpm |
| STP5C | 5 Hp | Three-phase 380-415 VAC, 50 Hz | Fixed, 2875 rpm |
| Item | Range |
|---|---|
| Model length (manifold bottom to motor inlet) | 1524 to 5080 mm |
| Riser pipe length | 152 to 1524 mm in 76 mm increments |
| Standard relief valve | Relieves at 2.76 bar, resets above 2.41 bar |
Figures from the manufacturer's published documentation. Confirm the final configuration with Apex at quotation stage.
Questions
FE PETRO® 6" High Capacity 3 and 5 Hp Pumps: common questions
- What power supply do the 6" pumps need?
- The 50 Hz STP3C and STP5C require a three-phase 380-415 VAC supply.
- Can the pump motor be serviced without an electrician?
- Franklin designs the unit so that large pins and sockets disconnect the wiring automatically when the extractable part is removed, allowing pump motor maintenance without an electrician on site.
- Which leak detector suits the 6" pump?
- The FE PETRO MLD-HC (gasoline) or MLD-HCD (diesel) high capacity mechanical leak detector.
Request a Quotation
Get a quotation for the Franklin Fueling Systems FE PETRO® 6" High Capacity 3 and 5 Hp Pumps.
Tell us the quantities and the site. Apex prepares every quotation for the project, then supplies, installs and services the equipment in Lebanon.
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