Two Full Milk Collector Cup Sets with 24mm Flange - Replacement Parts

In this review the focus is on a practical replacement kit for mothers who already own a compatible wearable breast pump. The Two Full Milk Collector Cup Sets with 24mm flange are intended for Momcozy S12 Pro and S9 Pro users who need spare components; the single biggest reason to consider them is that they provide a complete closed system replacement with dual channel anti-backflow design to prevent milk reaching the motor. The review examines fit, comfort, leak resistance and ease of cleaning based on the product features and reported user experience.

Key Features

• Complete replacement set: Each package contains two flanges, two milk collector cups, two duckbill valves, two silicone diaphragms and two linkers so users receive everything needed to replace worn parts for two pumps or to have spares on hand.
• Model compatibility: Specifically compatible with Momcozy S12 Pro and S9 Pro wearable breast pumps, which reduces guesswork when matching parts for those exact models.
• Closed system design: The dual channel anti-backflow construction separates gas and milk to help prevent milk from reaching the motor and to minimize contamination risks.
• Leak prevention: The silicone diaphragm designed without a top gap and a one-way duckbill valve aim to maintain suction while keeping milk flow directed into the collector cup.
• Comfortable material: Components are made from BPA-free food grade silicone that is soft, odorless and intended to sit smoothly against the breast to reduce soreness and swelling.
• Easy to clean: Parts can be washed with warm soapy water and are safe for boiling or steam sterilization at 100C (212F) for 5-10 minutes.

Who It's For

These replacement sets are a practical choice for parents who already own a Momcozy S12 Pro or S9 Pro wearable pump and need a reliable spare or replacement kit. The complete contents and closed system design make it a sensible buy when original parts are worn, lost or when an extra set is desired for travel or daycare.

Shoppers who use other Momcozy models such as S12 or S9, or any different brand of pump, should look elsewhere because these parts are only compatible with the S12 Pro and S9 Pro. Buyers seeking medical-grade, manufacturer-original components may also prefer official branded replacements over third-party options.

Pros & Cons

Pros

• Comprehensive kit that replaces all common wear parts so you can resume regular pumping quickly.
• Closed system and one-way valve help reduce the risk of milk backflow and motor contamination.
• Soft, BPA-free silicone aims to increase comfort during wear and is easy to sterilize.

Cons

• Some users report occasional leakage or spill during use, so results may vary by fit and handling.
• Build sturdiness has mixed feedback; parts may feel less robust than original manufacturer components.

Specifications

Package contents	Two full sets: 24mm flange x2, milk collector cup x2, duckbill valve x2, silicone diaphragm x2, linker x2
Compatible models	Momcozy S12 Pro and S9 Pro only
System type	Closed system with dual channel anti-backflow
Material	BPA-free food grade silicone
Cleaning	Wash with warm soapy water; boil or steam at 100C (212F) for 5-10 minutes
Valve type	Duckbill one-way valve

Our Verdict

For owners of the Momcozy S12 Pro or S9 Pro who need a complete replacement kit, this set delivers strong value by supplying all wearable parts and a closed system aimed at preventing backflow. Comfort, complete contents and easy sterilization make it a useful backup, but expect variable performance on leak resistance and a lighter build feel compared with original parts.

Frequently Asked Questions

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

Will these fit my Momcozy S12 or S9?
No, they are compatible only with the S12 Pro and S9 Pro models; check your model before purchasing.

How should I clean and sterilize the parts?
Wash after each use with warm soapy water and rinse well; you can boil or steam at 100C (212F) for 5-10 minutes for sterilization.