Beaina 4PCS Duckbill Valves – Replacement Parts for Wearable Breast Pumps (S18/S21, Lansinoh Duo)

Beaina 4PCS Duckbill Valves — Replacement Parts for Wearable Breast Pumps

When you rely on a wearable breast pump, consistent performance and hygiene matter. The Beaina 4-pack of duckbill valves is designed as dependable replacement parts that fit a range of popular models. Crafted from BPA-free silicone, these valves feel soft against the skin and support a comfortable pumping experience across sessions. The one-way design helps guide milk in the desired direction, reducing the chance of backflow between uses and helping you stay in control of your pumping routine.

What you get

• 4 silicone duckbill valves
• Compatibility with Mommed S18/S21, Lansinoh Discreet Duo, Mammanuwa NICEGREEN Nuliie S32 Series
• Closed-system design with a one-way flow to help minimize leaks between uses
• Easy to clean and reusable; suitable for regular replacement every 4–12 weeks

Key benefits for everyday pumping

• Skin-friendly, BPA-free silicone provides a soft, comfortable feel during pumping
• One-way milk flow helps keep milk moving in the intended direction, reducing backflow risk
• Hygienic closed-system design supports a tidy pumping routine and easier maintenance
• Replacing worn parts can help maintain performance without investing in a full pump

Practical tips: wash with warm water and mild soap after use, air-dry completely before reassembling. Store in a clean place to protect the valves between sessions. Replace as needed, typically every 4–12 weeks, depending on usage and cleaning frequency. This set is intended to supplement your existing system, offering a cost-effective way to keep pumping on track.