




We offer free standard shipping to every province and territory in United Kingdom.
We offer free standard shipping to every province and territory in United Kingdom. No minimum purchase is required, and all orders include tracking for your convenience.
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Deliveries to United Kingdom’s outer and remote regions may experience seasonal delays caused by severe weather or limited carrier availability. We appreciate your patience and recommend allowing additional time for your order to arrive safely.
MilkFlow presents an 8 pack of duckbill valves designed to work with a wide range of popular pumps. Crafted from smooth, non-porous silicone, these replacements feel soft to the touch and are built to stand up to regular use. The set aims to deliver suction performance close to original parts, while offering an affordable, ready-to-use option for extended pumping sessions. This is an aftermarket part, not affiliated with Spectra.
Regular valve replacements help maintain airflow and hygiene between deeper cleanings. The 8 count provides a convenient supply for routine changes, helping you reduce the risk of residue buildup and maintain a steady pumping rhythm when needed.
Real-world use scenarios often involve long pumping sessions or busy days. With a ready supply of replacements, you can swap in seconds, keep your equipment fresh, and focus on your routine without interruptions. While these valves are designed to perform similarly to original parts, individual results may vary depending on pump model and maintenance habits.
Q: Are MilkFlow Duckbill Valves compatible with Spectra S1/S2 and Medela?
A: Yes. The 8-pack fits Spectra S1/S2, 9 Plus, Synergy Gold, Dew 350, and most Medela pumps, with similar suction.
Q: How should I install and care for these valves?
A: No tools required: snap on/off with the grab-pull tab; hand-wash or dishwasher-safe; replace every 3–6 months.
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