Momcozy Silicon Diaphragm & Valve for S12 Pro

Engineered for comfort, hygiene and optimal milk expression, this replacement set helps restore suction efficiency and prevent leaks during pumping sessions.

About the Product

- Compatibility: Specifically for Momcozy S9 Pro / S12 Pro models. 
- Contents: 1 food‑grade silicone diaphragm + 1 silicone duckbill valve. 
- Material: BPA‑free, food‑grade silicone.
- Purpose: Helps maintain an airtight seal and supports efficient milk drainage from flange to collection container.

Product Features

• Precision fit for S12 Pro/S9 Pro systems: designed to snap in seamlessly and restore full suction and performance.
• Soft, safe silicone construction: gentle against the skin and compatible with milk‑safe hygiene standards.
• Leak‑prevention enhancement: the diaphragm keeps the seal tight while the valve secures directed milk flow for cleaner collection.
• Easy to replace: minimal tools needed, reducing downtime and helping maintain pump readiness for frequent use.
• Enhances pump efficiency: replacing worn parts can significantly improve suction, reduce discomfort and boost milk output.