Keeping your breast pump parts in good condition is one of the easiest ways to maintain strong suction, protect your milk output, and get the most out of every pumping session. Here's the scoop on a breast pump parts replacement schedule to help you stay on track!
When Should I Replace My Breast Pump Parts?
Replace Lansinoh breast pump parts based on how often you pump and the specific part replacement schedule. The white milk valves (duckbill style) wear out the fastest and have the biggest impact on suction — so when in doubt, start there.
Daily Maintenance & Inspection
Before every pumping session, give your parts a quick once-over. Discard and replace any piece that is torn, cracked, or no longer seals tightly. A few seconds of inspection before each session can save you a lot of frustration later.
Use the schedule below as your go-to guide for when each part is due for a refresh.
Breast Pump Parts Replacement Schedule
Traditional Double Electric Breast Pumps
For: NaturalWave® Double Electric Breast Pump, Signature Comfort/Pro Double Electric Breast Pump, Smartpump 3.0 Rechargeable Breast Pump
When to Replace Parts Sooner
Tubing: Inspect tubing regularly for condensation, mold, or stretching. Replace immediately if moisture gets inside and cannot be air-dried.
Flanges & Collection Cups: Replace sooner if they become scratched, cloudy, or warped.
Silicone/Flange Inserts: Replace them any time your nipple size changes.
Wearable Breast Pumps
For: DiscreetDuo™, DiscreetDuo™ Flow, Thrive 2-in-1 Breast Pump™
Signs It's Time to Replace Parts Sooner
Don't wait for your scheduled replacement if you notice any of the following:
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A decrease in suction strength
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A drop in milk output
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Visible cracks, stretching, warping, or cloudy buildup on any part
Pro tip: If you notice a sudden drop in milk output, worn valves are almost always the primary culprit.
Frequently Asked Questions
How often should you replace breast pump parts?
It depends on the part and how frequently you pump. Valves need replacing most often — every 3 to 6 weeks for frequent pumpers. Diaphragms and flange inserts should be replaced every 2 to 3 months, and flanges, collection cups, and tubing every 3 to 6 months.
How do I know when to replace breast pump parts?
The most common signs are a drop in suction or a decrease in milk output. You should also replace any part that shows visible wear — cracks, warping, cloudiness, or stretching — regardless of how recently it was replaced.
Does insurance cover breast pump replacement parts?
Many insurance plans do cover breast pump replacement parts — but coverage varies by plan. Contact your insurance provider directly to find out what's covered, or check with a supplier like Aeroflow Breastpumps, who can help verify your benefits.
How often should I replace pump valves?
Valves wear out faster than any other part. If you pump frequently or exclusively, replace them every 3 to 6 weeks. If you pump occasionally, every 2 to 3 months is generally sufficient.
Can worn pump parts affect my milk supply?
Yes — worn or damaged parts, especially valves, can reduce suction strength, which directly impacts how much milk you're able to express. If your output has dropped unexpectedly, replacing your valves is the first thing to try.
How often should I replace wearable pump parts?
For Lansinoh wearable pumps including the DiscreetDuo, DiscreetDuo Flow, and Thrive 2-in-1 — replace the valves, diaphragms, and flange inserts every 2 to 3 months, and flanges and collection cups every 3 to 6 months.
Where can I buy Lansinoh breast pump replacement parts?
You can shop the full Lansinoh replacement parts collection at Lansinoh.com.
