MilkFlow 14mm Flange & Duckbill Valve Replacement Parts for Spectra S1/S2/9+ (2-Pack)

Refresh your Spectra pumping setup with MilkFlow replacement parts

Note: This MilkFlow 2-pack is a replacement parts set, not original Spectra accessories. It includes two 21mm breast shields and two reinforced duckbill valves, designed for Spectra S1, S2, 9 Plus, and Synergy Gold pumps, offering a practical upgrade without committing to a full kit.

Reliable comfort meets practical design. The shields are sized to provide a gentle, consistent fit, while the duckbill valves feature a reinforced, easy-grip base that helps you adjust and secure the parts with minimal hand strain. This can be especially helpful during longer pumping sessions or night-time routines.

Durable materials and flexible engineering let you focus on the task rather than the setup. You’ll find the parts crafted from 100% food-grade, BPA-free materials, so the interface with bottles and milk remains cleanly designed and safe for everyday use. The combination of sturdy shields and resilient valves works with Spectra wide-neck bottles and most wide-mouth bottles, giving you versatility across bottle choices.

Sizing and comfort

Comfort matters, and this set supports it with options that align to common flange preferences. Available in a range from 13mm to 30mm, you can pursue a comfortable fit that helps reduce discomfort and maintain a steady pumping rhythm during busy days. The included 21mm shields are a common choice for many users, contributing to a familiar pumping feel.

Product compatibility and versatility

In addition to wearing well with Spectra S1, S2, 9 Plus, and Synergy Gold pumps, these parts slide onto Spectra wide-neck bottles and most wide-mouth bottles. That means you can swap parts across different bottle collections you might already own, keeping your pumping routine simple and adaptable.

Care, safety, and maintenance

• Top-rack dishwasher safe
• Boiling safe and steam safe for sanitizing
• 100% food-grade, BPA-free materials
• Easy to clean and quick to dry

Real-world use and scenarios

For many nursing parents, reliable gear translates to smoother mornings and calmer evenings. The MilkFlow replacements are designed to slip into your routine with minimal fuss, helping you keep pumping momentum even on busy days. The reinforced valve design aims to maintain a good seal, while the easy-grip base supports straightforward assembly.

What you get

• 2 x breast shields (21mm)
• 2 x reinforced duckbill valves