There are two types of breast pump system: open system and closed system on the market. The difference lies in whether a barrier (aka backflow protector) is included or not.
An open system pump has no barrier and is subject to milk backflow due to its design. A closed system pump, on the other hand, has a barrier between the breast milk and the pump. With this barrier, no milk will ever get into the pump or backflow into the tubing, which prevents any kind of contamination between the pump and the milk.
The universal backflow protector is the assembly of three parts, inner case, silicone membrane, and outer case. The stem length of the inner case defines the compatibility of a backflow protector. (See other design of the barrier)
Maymom develops backflow protectors of 3 types of stem length: short-stem, medium-stem, and long-stem. They are designed to be installed on different pump parts to prevent the milk backflow into the tubing. The silicone membrane is separately sold for those who need to replace old one.
It’s convenient to use a backflow protector in a closed system, yet it is important to follow the instruction (to turn not pull/push) when installing/removing it because the small tip is vulnerable compared to human power.
Short-stem Backflow Protector
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- Short-stem Backflow Protector
- Backflow Protector (4 pc) Bonus Flange Adapter
- Backflow Protector (2 pc) Duckbill Valve
- Backflow Protector (2 pc) Tubing
- Inner Case (2 pc)
Features
- No milk will enter the tubing, so the tubing will remain clean
- Interchangeable and Compatible with OEM parts
- Food-contact grade Material (PP, Silicone)
- Bisphenol-A (BPA)/DEHP-free
- Steam safe for sterilization
- Made in Taiwan
Compatible with
- Spectra flanges and Spectra breast pump (S1/S2/9 Plus)
Notice
- TURN the backflow protector to install/remove instead of pulling/pushing with force
- Depart all parts after each use, wash and dry them as soon as possible to avoid mold growth
Medium-stem Backflow Protector
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- Medium-stem Backflow Protector
- Backflow Protector (2 pc) Tubing Kit - for Spectra/Avent/Ameda
- Backflow Protector (2 pc) Tubing Kit - for Medela Freestyle
Features
- No milk will enter the tubing, so the tubing will remain clean
- Interchangeable and Compatible with OEM parts
- Food-contact grade Material (PP, Silicone)
- Bisphenol-A (BPA)/DEHP-free
- Steam safe for sterilization
- Made in Taiwan
Compatible wth
- Cimilre S3/F1
- Ameda Mya
- Ameda Mya Portable
- Ameda Mya Pro
- Motif Luna
Notice
- NOT for Ameda Purely Yours Pump, Finesse
- TURN the backflow protector to install/remove instead of pulling/pushing with force
- Depart all parts after each use, wash and dry them as soon as possible to avoid mold growth
Long-stem Backflow Protector
Features
- Allow to use Medela breastshield on Spectra breast pumps
- Interchangeable and Compatible with OEM parts
- Food-contact grade Material (PP, Silicone)
- Bisphenol-A (BPA)/DEHP-free
- Steam safe for sterilization
- Made in Taiwan
Compatible with
- Medela breastshield and Spectra breast pump (S1/S2/9 Plus)
Notice
- NOT for Medela Pump in style, New Pump in style MaxFlow
- NOT for Spectra flanges
- TURN the backflow protector to install/remove instead of pulling/pushing with force
- Depart all parts after each use, wash and dry them as soon as possible to avoid mold growth
Silicone Membrane for Backflow Protector
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- White (4 pc)
- White (2 pc)
- Blue (2 pc)
- Pink (2 pc)
- Orange (2 pc)
- with Duckbill Valve (white & pink)
- with Duckbill Valve (8 pc)
Features
- Available color: white, blue, pink, orange
- Interchangeable and Compatible with OEM parts
- Stronger material for improved performance
- Food-contact grade Material (Silicone)
- Bisphenol-A (BPA)/DEHP-free
- Steam safe for sterilization
- Made in Taiwan
- Also compatible with Maymom Closed System Connector
Compatible with
- Spectra SG/S1/S2/9 Plus
- Ameda Mya/Mya Pro/Mya Portable
Notice
- Change the silicone diaphragms regularly to optimize the performance of your breastpump
- NOT fit the old version of Spectra backflow protector
SPECTRA and the SPECTRA Logo are registered trademarks of Mother's Milk, Inc. DBA Spectra Baby USA and Min Byung Wook DBA Uzinmedicare. Ameda and its pump models are registered trademarks of Ameda INC. Corp. Medela is a registered trademark of Medela Holding AG, Switzerland. Maymom is not affiliated with these companies nor do they endorse the product and compatibility claims.