Stenner
Shop Stenner Parts for Reliable Chemical Feed Pumps
Stenner pumps do one of the hardest jobs on the equipment pad: feeding chlorine, acid, or other chemical solutions in small, steady doses day after day. When a pump tube flattens, a roller starts to wear, or an injection check valve plugs up, chemical feed can change fast. That can lead to underfeeding, overfeeding, cloudy water, equipment corrosion, or a pool that simply refuses to stay balanced.
Fresh Pool Supply carries Stenner parts for chemical feed pump maintenance, repair, and rebuild work, including pump tubes, QuickPro pump heads, ferrules, connecting nuts, adapters, rollers, tube housings, flow indicators, injection check valves, suction line strainers, motor components, and feed rate control parts. Whether you are maintaining a residential pool system or keeping a commercial chemical feed setup online, the right Stenner replacement part helps restore accurate chemical delivery without replacing the entire pump.
How to Choose the Correct Stenner Replacement Part
Stenner parts are model-specific, and several components can look similar at first glance. Before ordering, confirm the pump model, tube number, chemical application, and tubing connection size.
- Find the Stenner pump model. Check whether the pump is a Classic Series, S Series, SVP, fixed-output, adjustable-output, single-head, or double-head model.
- Match the existing tube number. Do not choose a pump tube by appearance alone. Tube number affects chemical feed rate.
- Confirm the tube material. Santoprene and other tube materials are used for different applications. Chemical compatibility matters.
- Check the connection size. Verify whether the system uses 1/4 inch, 3/8 inch, or 6 mm tubing connections.
- Inspect related wear parts. When replacing a tube, check the ferrules, nuts, fittings, roller assembly, suction line, discharge line, strainer, and injection check valve.
Quick Fit Tip
The safest approach is to match the part number from the existing part or confirm compatibility from the pump model plate before ordering.
Don’t Forget Ferrules, Nuts, Adapters, and Injection Parts
A Stenner pump tube may be the part that gets the most attention, but the small connection pieces matter just as much. Ferrules and connecting nuts create the seal between the pump tube, suction line, discharge line, adapter, and injection fitting. If a ferrule is missing, worn, overtightened, or mismatched to the tubing size, the pump can pull air, leak chemical, or fail to prime correctly.
Stenner pump tubes commonly use 1/4 inch or 6 mm tube connections. A 1/4 inch ferrule may be used with 1/4 inch connecting nuts, and it can also be used in certain 3/8 inch tubing setups when paired with the correct 3/8 inch tube adapter. Always verify the adapter, nut, ferrule, and tubing configuration before installation.
When to Repair the Pump vs. Replace the Pump
Many Stenner pumps can be restored with the right service parts. If the motor runs and the pump head is intact, replacing the tube, roller assembly, ferrules, fittings, or injection valve may be enough to bring feed output back to normal.
- Repair when the pump runs but output is low or inconsistent.
- Repair when the tube is flattened, cracked, brittle, swollen, or leaking.
- Repair when the pump head housing, latches, or rollers are worn but the motor is still working.
- Repair when the pump loses prime because of worn fittings, ferrules, or suction line parts.
- Replace the complete pump when the motor is failing, the housing is damaged, or the pump no longer matches the required chemical feed rate.
Related Stenner and Chemical Feed Categories
Why Shop Stenner Parts at Fresh Pool Supply?
At Fresh Pool Supply, we believe in doing the repair once and doing it right. Chemical feed systems are too important for guesswork. A small mismatch in tube number, fitting size, or connection style can throw off chemical delivery and create bigger water quality problems.
We stock Stenner parts for practical field repairs and routine maintenance, and our product pages are built to help you verify what you are ordering. Many Stenner parts are small, but they are not generic. Matching the correct tube, ferrule, adapter, valve, and pump head part is the difference between a quick fix and a repeat repair.
Frequently Asked Questions
What Stenner parts wear out most often?
The most common Stenner wear parts are pump tubes, ferrules, connecting nuts, roller assemblies, injection check valves, suction line strainers, and feed tubing.
How do I find the correct Stenner pump tube?
Check the existing tube number, pump model, pump head type, chemical application, and tubing connection size. Stenner tube numbers affect feed rate, so do not choose a replacement tube based only on appearance.
Do Stenner pump tubes include ferrules?
Many Stenner pump tube packages include ferrules, but package contents can vary by part number and pack quantity. Always check the product page before ordering, especially when comparing single tubes, two-packs, five-packs, and pump head assemblies.
Can 1/4 inch ferrules be used with 3/8 inch Stenner tubing?
In certain Stenner setups, the 1/4 inch ferrule is used with a 3/8 inch tube adapter to transition to 3/8 inch compression nuts and tubing. The pump tube connection itself is commonly 1/4 inch or 6 mm. Verify the exact adapter, nut, ferrule, and tubing combination before installation.
When should I replace a Stenner injection check valve?
Replace the injection check valve if chemical feed is restricted, water backs up into the chemical line, the valve is clogged, the check action fails, or the fitting shows chemical damage. It is also smart to inspect the injection check valve whenever you replace the pump tube.
Why is my Stenner pump running but not feeding chemical?
Possible causes include a worn pump tube, damaged roller assembly, air leak at the suction fitting, empty solution tank, clogged suction strainer, blocked discharge line, stuck injection check valve, or incorrect tube installation.
Should I replace the whole Stenner pump or just the part?
If the motor and drive are still working, many feed issues can be fixed with a pump tube, roller, ferrule, fitting, injection valve, or pump head part. If the motor is failing, the housing is damaged, or the pump no longer meets the required feed rate, replacing the complete pump may be the better option.