Franklin Electric Effluent Mid-Suction Submersible Pumps
- FPS E-Series and J-Class E-Series mid-suction effluent pumps
- 10 to 90 GPM with shut-off head up to 619 feet
- Thermoplastic 10 and 20 GPM or stainless steel 35 to 90 GPM
- Dry-run protection and removable check valve on 10 and 20 GPM
- Pump-end-only options when your Franklin motor is still good
- Send your dose rate and total head, and we will pick stages
Not every effluent pump should pull from the floor of the chamber, and a Franklin Electric mid-suction effluent pump does not. Its intake sits partway up the pump body, and its stacked stages push treated effluent up a hill or across a long pipe run to drip lines, spray heads, or a mound.
Below: the E-Series in both its FPS and J-Class families, a model table by flow group, and a simple way to choose.
Mid-Suction Intake, Explained
Mid-suction means the pump draws liquid through an intake set partway up its body, not at the very bottom. In a dosing chamber, that keeps the intake above the chamber floor where heavier particles settle. Franklin pairs this intake with multistage hydraulics so the E-Series can pump treated effluent longer distances than normal effluent sump-style pumps.
E-Series by Flow Group: 10 to 90 GPM
The FPS and J-Class families share the same E-Series design. Thermoplastic models carry FE (FPS) or JE (J-Class) codes, and the stainless steel HE models serve both. Figures below are for complete pump and motor units.
| Flow group | Build | HP (complete units) | Shut-off head | Bearing and valve |
|---|---|---|---|---|
| 10 GPM | Thermoplastic | 1/2 to 1.5 HP | 242 to 619 ft | Shaft bearing with dry-run protection, built-in check valve |
| 20 GPM | Thermoplastic | 1/2 to 1.5 HP | 152 to 379 ft | Shaft bearing with dry-run protection, built-in check valve |
| 35 GPM | Stainless steel | 1/2 to 1.5 HP | 70 to 228 ft | Ceramic sleeve and hex rubber bearings, no check valve |
| 45 GPM | Stainless steel | 1/2 to 1.5 HP | 68 to 155 ft | Ceramic sleeve and hex rubber bearings, no check valve |
| 60 GPM | Stainless steel | 1/2 to 1.5 HP | 65 to 151 ft | Ceramic sleeve and hex rubber bearings, no check valve |
| 90 GPM | Stainless steel | 1.5 HP | 112 ft | Ceramic sleeve and hex rubber bearings, no check valve |
Pump-end-only versions run up to 3 HP in several flow groups for more head. The 1/2 HP models come in 115 V or 230 V, and larger models run on 230 V.
Features on every E-Series pump
- Stainless steel or thermoplastic discharge and motor bracket that resist corrosion
- Carbon phenolic upthrust washer to limit wear
- Heavy duty 300 V, 10 ft SJOOW motor leads
- Franklin Electric submersible motor
Picking Stages for Your Dose Rate and Head
- Get the dose rate. Your septic design lists the GPM for the drip, spray, or mound field.
- Add up total head. Include lift from the pump to the highest point, pipe friction, and the pressure the drip line or spray heads need.
- Read the curve, not just shut-off head. The pump must deliver your GPM at your total head. Shut-off head is the zero-flow maximum.
- Pick the build. Thermoplastic is the standard pick for residential systems at 10 or 20 GPM. Stainless steel covers 35 to 90 GPM and harsher water.
- Plan the check valve. The 35 to 90 GPM models need a separate check valve in the discharge line.
Protect whichever model you choose with a clean tank outlet filter. Our page on effluent filter basics explains how the filter and pump work together.
Emptying a Tank? Use Bottom Suction Instead
If you want to pump a tank down as low as possible, such as a rainwater cistern or gray water tank, a bottom intake works better. See the C1 bottom suction pump for that job.
An E-Series pump also cannot handle raw sewage. It is for filtered effluent only, after the septic tank.
Stages, Stainless, and Pump Ends: Franklin Electric Mid-Suction Effluent Pump Cost
More stages and more HP cost more, so a 1.5 HP 10 GPM model costs more than a 1/2 HP unit. Stainless steel HE models cost more than thermoplastic FE or JE models.
A pump end alone costs less than a complete unit when your Franklin submersible motor still tests good. Regular care also helps, and our Franklin submersible pump care guide lists the basics.
Frequently Asked Questions
What is the best effluent pump for a septic tank?
The best effluent pump for a septic tank is one sized to your system's dose rate and total head, built for filtered effluent, and matched to your chamber's voltage. For drip, spray, and mound systems, a multistage mid-suction pump like the Franklin E-Series is a strong fit because it builds high head. Choose thermoplastic for 10 or 20 GPM residential systems and stainless steel for higher flow or tougher water.
What is a high head effluent pump?
A high head effluent pump is a submersible pump that can push treated effluent to a much higher point or a much longer distance than a standard sump-style effluent pump. It gets that head from multiple stacked stages. The Franklin E-Series is a high head effluent pump, with shut-off head up to 619 feet on the 10 GPM 1.5 HP model. It suits pressure dosing, drip fields, and spray systems.
Can you replace parts on a Franklin mid-suction effluent pump?
Yes, you can replace parts on a Franklin mid-suction effluent pump instead of buying a whole new unit. The E-Series is sold as pump-end-only models, so you can swap the hydraulic stages and keep a Franklin submersible motor that still tests good. The 10 and 20 GPM models also have a removable built-in check valve. Send us the model number from the pump label, such as 20FE05P4-2W115, and we will match the right pump end.
Request a quote with your current pump's model number, or your dose rate and total head, and we will confirm the right E-Series model.