Silicone Breast Pump Duckbill Valves & Diaphragm Replacement

Keep your breast pump working at peak performance with these high-quality silicone duckbill valves and diaphragm replacement parts. Designed specifically for breastfeeding moms, these anti-backflow valves and spare membranes ensure smooth, continuous milk expression — whether you're at home or on the go.

Worn-out valves and diaphragms are one of the most common reasons breast pumps lose suction. Replacing them regularly keeps your pump efficient, hygienic, and effective so your breastfeeding journey stays as stress-free as possible.

Made in Mainland China.

Why You'll Love These Replacement Parts

• ✅ Anti-Backflow Design — Duckbill valve shape prevents milk from flowing back into the tubing, keeping pumped milk clean and uncontaminated.
• ✅ Food-Grade Silicone — Made from soft, BPA-free silica gel that is safe for contact with breast milk.
• ✅ Easy to Install & Clean — Simple snap-in fit; dishwasher safe and easy to sterilize for worry-free hygiene.
• ✅ Multiple Options Available — Choose from a variety of combinations to suit your needs: duckbill valves only, diaphragms only, or convenient sets.
• ✅ Essential Pumping Accessory — A must-have spare part for any electric or manual breast pump user.

Specifications

• Material: Food-grade silicone (silica gel)
• Valve Dimensions: Height ~23 mm / 0.9 in | Inner Diameter ~12 mm / 0.47 in
• Diaphragm Diameter: ~43 mm / 1.69 in
• Options: 6pcs duckbill valves & 4pcs diaphragm set | 6pcs diaphragms | 4pcs diaphragms | 8pcs duckbill valves | 4pcs duckbill valves | 1pc diaphragm | 1pc duckbill valve

Package Includes

1 pc or 1 set of breast pump diaphragm(s) or duckbill valve(s) — please select your preferred option at checkout.

Note: Please allow ±1–2 cm measurement tolerance due to manual measurement. Slight color variations may occur due to different screen resolutions.

Tips for Breastfeeding Moms

Lactation experts recommend replacing breast pump valves and membranes every 1–3 months (or sooner if suction decreases) to maintain optimal pump performance. For more breastfeeding guidance and resources, visit the CDC Breastfeeding Resource Center.

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Learn more: Breast pump

Frequently Asked Questions

Q: Are these silicone breast pump valves and diaphragms safe for contact with breast milk?

A: Yes. These replacement parts are made from food-grade silicone (silica gel) that is free from BPA and other high-concern chemicals, making them safe for direct contact with breast milk. Always sterilize before first use.

Q: How often should I replace my breast pump duckbill valves and membranes?

A: Lactation consultants and pump manufacturers generally recommend replacing duckbill valves every 1–3 months, or immediately if you notice a loss of suction, cracking, or discoloration. Diaphragms should also be inspected regularly and replaced every few months for best results.

Q: How do I clean and sterilize these breast pump replacement parts?

A: Simply rinse the valves and diaphragms in warm soapy water after each use, then sterilize by boiling for 3–5 minutes or using a steam sterilizer bag. Allow to air dry completely before reassembling your pump.

Q: Will these valves and diaphragms fit my breast pump model?

A: These parts are designed as universal-style replacements. Please compare the listed dimensions (valve height ~23 mm, inner diameter ~12 mm; diaphragm diameter ~43 mm) with your pump's specifications before purchasing to ensure compatibility.