- Turn off power before installing or servicing the chemical metering pump.
- Install only in a compatible low-pressure chemical feed system rated for the pump output and pressure.
- Confirm the pump voltage is 120V 60Hz before wiring or connecting power.
- Confirm the system requires a 50 GPD fixed-output pump before installation.
- Use the correct 3/8" suction and discharge tubing for this pump configuration.
- Use the correct low-pressure injection fitting for 25 PSI applications.
- Do not substitute a 100 PSI injection check valve unless the application and pump configuration are specifically verified.
- Install the pump in a dry, secure, accessible location where it can be serviced.
- Mount the pump securely using the proper mounting bracket or mounting surface.
- Keep the pump above the chemical solution tank when practical and follow Stenner installation guidelines.
- Verify the suction line, discharge line, injection point, tubing connections, and chemical tank are correctly installed before startup.
- Prime the pump according to the Stenner instructions after installation.
- Check all tubing connections and injection points for leaks before leaving the system unattended.
- Calibrate the pump output in the field using analytical testing because actual output can vary with installation conditions.
- Do not install this pump if the application requires a different flow rate, pressure rating, voltage, tubing size, or tube material.
Product Highlights
- Stenner 45M5 Classic Series chemical metering pump
- Single-head fixed-output pump configuration
- 50 GPD output for compatible low-pressure chemical feed applications
- 25 PSI maximum operating pressure
- 120V 60Hz single-phase motor
- Uses #5 Santoprene pump tube
- Includes 20' of 3/8" white LDPE suction/discharge tubing
- QuickPro pump head supports easier tube replacement
- Fixed-output design for timer, relay, or controller-based feed operation
- Verify flow rate, pressure, voltage, tubing size, and chemical compatibility before ordering
Stenner 45M5 Fixed 3/8"White Tubing 50 GPD 25 PSI | 45MFL5A3S
Stenner 45M5 Single Head Fixed Output Pump with 20' of 3/8" White LDPE Tubing. Output is 50 GPD for low pressure applications up to 25 PSI. Includes # 5 Santoprene Tube. 120V @ 60 Hz.
In stock
Only 6 left
SKU
35-200-06250
$446.95
The following product(s) can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.p65warnings.ca.gov.
Stenner 45MFL5A3S is a Classic Series 45M5 single-head fixed-output chemical metering pump for compatible pool, spa, and water treatment chemical feed applications. This pump is configured for low-pressure chemical feed systems up to 25 PSI and delivers a fixed output of 50 gallons per day.
This 45M5 pump includes a #5 Santoprene pump tube and 20' of 3/8" white LDPE suction/discharge tubing. The fixed-output design does not use a manual feed rate dial. Pump output is determined by the motor gear speed and pump tube size, making this model a good choice where a steady fixed chemical feed rate is needed and output is controlled by run time, a timer, relay, or compatible chemical automation controller.
The Stenner Classic Series peristaltic design uses a roller assembly to compress the pump tube and move chemical solution through the feed system. The pump is self-priming, can pump many off-gassing solutions, and uses a serviceable QuickPro pump head for easier pump tube replacement.
Use this pump for compatible chlorine, acid, sanitizer, pH control, or other chemical feed applications where the chemical, concentration, pressure, tubing material, and system conditions are compatible. Always verify the required feed rate, system pressure, voltage, tubing size, chemical compatibility, injection fitting, and installation configuration before ordering or installing a chemical metering pump.
| SKU | 35-200-06250 |
|---|---|
| Manufacturer SKU | 45MFL5A3S |
| GTIN/UPC | 840034705867 |
| Manufacturer | STENNER PUMP COMPANY |
| Brand | STENNER |
| Phase | 1 PH |
| Size | 3/8" Tubing |
| Horsepower | 1/30 HP |
| Pool Type | In Ground |
| Product Group | Chemical Metering Pump |
| Input Voltage | 120V |
| Cable Length (Ft) | 6' |
| Max Operating Pressure | 25 PSI |
| Flow Rate | 50 GPD |
| Style | Fixed Output |
| Tubing | Clear LDPE |
| Peristaltic Tube Material | Santoprene |
| In Stock | In Stock |
| Amp Draw | 1.7 |
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| Compatible Model | Compatible Brand | Notes |
|---|---|---|
| Classic Series Single Head Fixed / 45MF / 45M5 / 45MFL5A3S | Stenner | Complete Stenner Classic Series 45M5 single-head fixed-output chemical metering pump with #5 Santoprene tube, 3/8" tubing, 120V 60Hz motor, 50 GPD output, and 25 PSI maximum pressure. Verify voltage, pressure rating, tube number, tubing size, and chemical compatibility before ordering. |
| Low-Pressure Chemical Feed Systems / 25 PSI Max | Stenner | Suitable for compatible low-pressure chemical feed applications up to 25 PSI where a fixed-output 50 GPD pump is required. For 25 PSI installations, use the proper low-pressure injection fitting rather than a 100 PSI injection check valve unless the application is specifically verified. |
| 3/8" Tubing Chemical Feed Installations | Stenner | Configured for compatible 3/8" suction and discharge tubing installations. Verify tubing material, connection style, injection fitting, suction strainer, and chemical compatibility before installation. |
| #5 Santoprene Pump Tube Applications | Stenner | Uses a #5 Santoprene pump tube. Tube number affects pump output, so verify the tube number before replacing pump tubes or pump head components. |
- Stenner 45M5 single-head fixed-output chemical metering pump
- Installed #5 Santoprene pump tube
- Additional #5 replacement pump tube
- 20' roll of 3/8" white suction/discharge tubing
- 3/8" connecting nuts
- 1/4" ferrules for compatible Stenner pump tube connections and 3/8" adapter assemblies
- 25 PSI low-pressure injection fitting
- 3/8" weighted suction line strainer
- Mounting bracket
- Quick Start Manual / installation documentation
Installation Notes
Usage / Safety Information
Usage Instructions
- Confirm the pump is installed with compatible chemical solution and tubing.
- Confirm the chemical tank has adequate solution before operation.
- Confirm the suction line is fully seated and properly connected.
- Confirm the discharge line is connected to the correct injection fitting.
- Confirm the pump tube is the correct #5 Santoprene tube.
- Turn the chemical feed system on according to site procedures.
- Allow the pump to prime before relying on chemical feed output.
- Verify that chemical solution is moving through the tubing.
- Check the suction line, discharge line, pump head, and injection point for leaks.
- Use run time, a timer, relay, or compatible controller to manage the fixed chemical feed output.
- Test the pool or water system after adequate circulation time.
- Adjust run time, controller settings, or solution strength as needed to reach the desired chemical level.
- Inspect the pump tube regularly for flattening, cracking, swelling, brittleness, or leakage.
- Replace the pump tube as part of routine maintenance or whenever feed output becomes inconsistent.
- Inspect tubing, fittings, ferrules, connecting nuts, injection fittings, and suction strainers during service.
- Keep the pump and chemical feed area clean, dry, and accessible.
Safety Information
- Use only with compatible chemicals, tubing, fittings, and system pressure.
- Always follow the Stenner pump manual and chemical manufacturer instructions.
- Disconnect electrical power before installing or servicing the pump.
- Use a qualified technician for electrical work when required.
- Relieve pressure before opening the pump head or disconnecting tubing.
- Wear chemical-resistant gloves and eye protection when handling chemical feed equipment.
- Avoid contact with chlorine, acid, or other concentrated chemical solutions.
- Do not mix pool chemicals.
- Do not operate the pump with the pump head cover removed.
- Do not operate the pump if tubing, fittings, pump head components, electrical components, or the injection point are leaking or damaged.
- Do not exceed the 25 PSI maximum pressure rating for this pump configuration.
- Do not run the pump with incompatible tubing or chemicals.
- Keep children away from chemical feed equipment and chemical storage areas.
- Store chemicals according to the chemical manufacturer's instructions.
- If chemical exposure occurs, follow the chemical label or SDS instructions.
Important Notes
- 45MFL5A3S is a complete Stenner 45M5 single-head fixed-output chemical metering pump.
- This pump is rated for 50 GPD output at 25 PSI maximum pressure.
- This pump uses a #5 Santoprene pump tube.
- This pump is configured with 3/8" white LDPE suction/discharge tubing.
- This is a fixed-output pump, not an adjustable-output pump.
- Fixed-output pump feed rate is controlled by pump run time, external control, or system design, not by a manual feed rate dial.
- For an adjustable-output version, use the compatible adjustable 45M5 model when available.
- For 25 PSI low-pressure applications, Stenner uses an injection fitting rather than the 100 PSI injection check valve configuration.
- Actual pump output can vary based on installation conditions and should be field calibrated with water testing or analytical testing.
- Chemical compatibility depends on the chemical being pumped, concentration, temperature, pressure, tubing material, and operating conditions.
- This product is not a replacement pump tube, pump head, motor service kit, injection fitting, or tubing-only item.
- Do not choose a chemical feed pump based only on horsepower or appearance.
- Verify required gallons per day, pressure rating, voltage, tubing size, and chemical compatibility before ordering.
What is Stenner 45MFL5A3S?
Stenner 45MFL5A3S is a Classic Series 45M5 single-head fixed-output chemical metering pump with 3/8" tubing, #5 Santoprene pump tube, 120V power, 50 GPD output, and 25 PSI maximum pressure.
Is 45MFL5A3S a fixed-output or adjustable-output pump?
45MFL5A3S is a fixed-output pump. It does not have a manual feed rate dial. Output is controlled by pump run time, external controls, or system design.
What is the output of Stenner 45MFL5A3S?
Stenner 45MFL5A3S is rated for 50 gallons per day, 2.08 gallons per hour, or approximately 4.44 ounces per minute at 60 Hz.
What pressure is 45MFL5A3S rated for?
45MFL5A3S is a low-pressure pump configuration rated for 25 PSI maximum pressure.
What voltage is 45MFL5A3S?
45MFL5A3S is a 120V, 60 Hz, single-phase pump.
What pump tube does 45MFL5A3S use?
45MFL5A3S uses a #5 Santoprene pump tube.
What tubing size does this pump use?
This pump is configured with 3/8" suction and discharge tubing.
Does this pump include tubing?
Yes. Fresh lists this pump with 20' of 3/8" white LDPE tubing.
Can this pump be used for chlorine feed?
This pump may be used for compatible chlorine feed applications when the chemical, concentration, tubing material, pressure, and installation conditions are suitable. Always verify chemical compatibility before use.
Can this pump be used for acid feed?
This pump may be used for compatible acid feed applications when the chemical, concentration, tubing material, pressure, and installation conditions are suitable. Always verify chemical compatibility before use.
Is this pump self-priming?
Stenner Classic Series peristaltic pumps are designed to be self-priming when installed and used according to the manufacturer's instructions.
Does this pump lose prime or vapor lock?
Stenner Classic Series pumps are designed to pump many off-gassing solutions and resist vapor lock when used within compatible application limits.
Is 45MFL5A3S the same as 45MJL5A3S?
No. 45MFL5A3S is the fixed-output version. 45MJL5A3S is the adjustable-output version with an output range up to 50 GPD.
When should I choose fixed output instead of adjustable output?
A fixed-output pump is useful when the desired feed rate is controlled by run time, a timer, relay, or compatible automation controller. Choose an adjustable model when manual output adjustment at the pump is needed.
What replacement pump tube should I use?
Use the compatible Stenner #5 Santoprene pump tube for this pump. Verify the existing tube number before ordering replacement pump tubes.
Does this pump use a 100 PSI injection check valve?
This pump is rated for 25 PSI maximum pressure. For 25 PSI Stenner pump configurations, use the proper low-pressure injection fitting unless a different setup is specifically verified.
Can I use this pump above 25 PSI?
No. Do not exceed the 25 PSI maximum pressure rating for this pump configuration.
Is this a complete chemical feed pump?
Yes. 45MFL5A3S is a complete Stenner chemical metering pump package. Replacement pump tubes, pump heads, latches, rollers, fittings, and tubing may be sold separately for service.
How do I confirm this is the correct Stenner pump?
Check the required flow rate, pressure rating, voltage, tubing size, pump tube number, chemical compatibility, and whether the application requires fixed or adjustable output before ordering.
Should this pump be calibrated after installation?
Yes. Chemical feed output should be confirmed in the field using water testing or analytical testing because actual output can vary with installation conditions.
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