MilkFlow 23mm Flange & Duckbill Valve – 2-Pack for Spectra S1/S2/9 Plus (Not Original)

Discover the MilkFlow 23mm Flange and Duckbill Valve set, a practical two‑pack of replacement parts designed for Spectra pumps. Compatible with Spectra S1, S2, 9 Plus, and Synergy Gold, it includes two 21mm breast shields and two reinforced duckbill valves for everyday pumping. These parts are MilkFlow brand replacements, not official Spectra accessories, and are built to support consistent, comfortable sessions.

What’s included and sizing options

• Contains 2 breast shields (21mm) and 2 duckbill valves
• Two-pack convenience lets you rotate parts while you clean the rest
• Sizes range from 13mm to 30mm to help you find a comfortable fit
• Made from 100% food-grade material, BPA-free
• Works with Spectra wide-neck bottles and most wide-mouth bottles
• Top-rack dishwasher safe, boiling safe, and steam safe for thorough sanitizing

Compatibility and durability that fit your routine

• Reinforced duckbill valves with an easy-grip base designed for daily use
• Designed to maintain a reliable seal through frequent pumping sessions
• Broad compatibility with Spectra S1, S2, 9 Plus, and Synergy Gold pumps

Care, cleaning, and best-use tips

Rinse after use and place on the top rack of the dishwasher for easy cleaning. They’re boiling-safe and steam-safe, making sanitizing between sessions straightforward without extra steps.

Real-world use possibilities

Keeping spare shields and valves on hand can reduce downtime during busy days, helping you stay prepared and maintain a steady pumping rhythm. The kit offers flexible sizing and reliable parts to support your pumping routine as needed.