Two Full Milk Collector Cup Sets with 27mm Flange Compatible

In this review of the Two Full Milk Collector Cup Sets, the bottom line is simple: these replacement parts are useful for mothers who already own a Momcozy S12 Pro or S9 Pro and need a complete spare set to maintain pumping hygiene and comfort. The package delivers two full sets with 27mm flanges, collector cups, duckbill valves, diaphragms and linkers, and the single biggest reason to buy is convenience - you get a complete, wearable replacement kit that restores a closed system and helps reduce soreness from worn or missing parts.

Key Features

• Complete replacement set: Each package includes two of every key component so you can replace both sides at once or keep a spare set ready for rotation and sterilization.
• Designed for Momcozy S12 Pro/S9 Pro: The 27mm flange and connectors are specifically compatible with those models, reducing fit issues when the size and model match.
• Closed system design: Dual channel anti-backflow and gas-milk separation aim to prevent milk reaching the motor and reduce contamination risk.
• Soft silicone material: Food-grade, BPA-free silicone provides a soft-touch surface that can help with soreness and offers a comfortable seal on the breast.
• Easy to clean: Components can be washed with warm soapy water and sterilized in boiling water or steam for 5-10 minutes to maintain hygiene.

Who It's For

This kit is best for parents who own the Momcozy S12 Pro or S9 Pro and need a cost-effective replacement for worn or lost parts. It is well suited to those who prefer a complete backup set to rotate between uses and sterilization cycles.

Those who should look elsewhere include owners of other Momcozy models or different brands, since the components are not compatible with S12, S9 or other pumps. Buyers seeking original manufacturer parts may also prefer OEM replacements rather than third-party options.

Pros & Cons

Pros

• Comes as two full sets so both sides can be replaced or one set kept as backup.
• Closed system and duckbill valve design help prevent backflow into the motor for cleaner operation.
• Soft, food-grade silicone flanges and diaphragms offer comfort and are BPA-free.

Cons

• Some users report leakage and concerns about sturdiness and overall quality compared with original parts.

Specifications

Package contents	Two full sets: 27mm flange x2, milk collector cup x2, duckbill valve x2, silicone diaphragm x2, linker x2
Compatible models	Only Momcozy S12 Pro and S9 Pro
Brand	IVARONAL (third-party replacement)
Material	Food-grade silicone, BPA-free
Design	Closed system with dual channel anti-backflow
Sterilization	Wash with warm soapy water; boil or steam at 100C for 5-10 mins

Our Verdict

For owners of the Momcozy S12 Pro or S9 Pro who need a cost-conscious, complete replacement kit, this two-set pack is practical and convenient; it restores a closed system and offers comfortable silicone flanges. However, if absolute OEM durability or guaranteed leak-free performance is essential, some buyers may prefer original parts or single-component replacements.

Frequently Asked Questions

Will these parts fit my pump?
They are compatible only with Momcozy S12 Pro and S9 Pro; verify your exact model before purchasing.

Are these original manufacturer parts?
No, these are third-party replacement parts made by IVARONAL, not original accessories.

How should I clean them?
Wash with warm soapy water and rinse; sterilize by boiling or steam at 100C for 5-10 minutes as needed.