Description
Single-head adjustable-output chemical metering pump from the Classic Series designed for controlled injection of treatment chemicals. It is intended for water-treatment and process applications such as disinfection, pH control, oxidation of iron/hydrogen sulfide/manganese, corrosion and scale control, and cooling tower or industrial process dosing. Output is set by motor rpm, feed-rate control, and tube size, with an external dial offering 5%–100% adjustment in 2.5% increments.
Quick Answer: What Is the Stenner STN45MJL3A4STAA?
The Stenner STN45MJL3A4STAA is a automatic chemical feeder: Stenner 45M3 22 gpd 120V 25 psi Peristaltic Pump w/ 3/8" Black Tube. It is brand new, ships in 1-2 business days, and is backed by the Stenner manufacturer warranty.
Stenner STN45MJL3A4STAA Specifications
| Brand | Stenner |
|---|---|
| Equipment Type | Automatic Chemical Feeder |
| Model Number | STN45MJL3A4STAA |
Key Features
- Adjustable output 5%–100% in 2.5% increments
- 20:1 turndown ratio for low-flow control
- Tool-free access to motor, feed-rate control, and pump head
- Quick tube replacement without tools
- Interchangeable pump heads and tubing to change capacity
- Available tank system for feed applications
How It Works
Chemical feeders and controllers deliver sanitizer and pH adjusters consistently. Tab chlorinators and floaters dissolve tablets at a controlled rate, automatic feeders and peristaltic pumps meter liquid chemicals, and controllers measure ORP and pH to tell feeders when to run. Storage and containment products keep chemicals separated, contained and safe.
How to Choose the Right Automatic Chemical Feeder
- Size feeders to the pool volume and chemical demand.
- Confirm the chemical the feeder is rated for (trichlor tablets, liquid chlorine, acid).
- For controllers, check probe types, outputs and alarms needed for your health code.
- Choose containment sized for the containers you store.
If you are replacing an existing part, the fastest way to confirm compatibility is to match the brand and model number on the old equipment. Send us the model number or a photo of the label and our team will help confirm the STN45MJL3A4STAA is the right fit before you order.
Installation and Safety
Install inline chlorinators after the heater with a check valve to protect equipment. Never mix chemicals, and never put cal-hypo in a trichlor feeder; the reaction can be violent. Follow the chemical manufacturer's safety data sheet and local codes.
Maintenance Tips
- Inspect feeder lids, O-rings and tubing regularly.
- Calibrate pH and ORP probes on schedule.
- Store chemicals cool, dry, ventilated and separated by type.
- Replace worn peristaltic tubes promptly.
What's Included
This listing is for the Stenner STN45MJL3A4STAA as described in the specifications above. Plumbing, wiring, unions and accessories are not included unless they are listed in the product name or specifications.
Built for Homeowners, Pool Pros and Property Managers
- Homeowners: match your existing model number, then reach out if you want a second set of eyes on compatibility before you order.
- Pool service pros and builders: order quickly, track every shipment, and reorder common parts for your routes and builds.
- Property managers and commercial pools: standardize equipment across properties and plan replacements with help from our team.
Frequently Asked Questions About the Stenner STN45MJL3A4STAA
Can I use any tablets in my chlorinator?
Use only the chemical the feeder is rated for, usually trichlor tablets. Never mix chemical types.
Where should a chlorinator be installed?
After the filter and heater, with a check valve so concentrated chlorine cannot back up into equipment.
Do controllers replace testing?
No. Test water regularly to verify controller readings.
Is this the genuine Stenner part?
Yes. It is brand new Stenner equipment (model STN45MJL3A4STAA) covered by the manufacturer warranty. Warranty terms vary by product and application; see the manufacturer documentation or ask our team.
