Pack of 4 | BPA-Free | High-Quality Silicone
SGD 13.50
Promo: SGD12.90
Tender Silicone Duckbill Valve (Pack of 4) | Spectra-Compatible
Ensure Strong Pump Suction & Optimal Milk Flow with Tender Duckbill Valves
Hormonal changes, pumping frequency, and postpartum stage can cause nipple diameter to change over time. Many mothers benefit from having 1–2 backup sizes to rotate as needed.
Unboxing and first look
Maintain your milk supply and pumping efficiency with the Tender Silicone Duckbill Valve, a critical component for Spectra breast pumps. Torn or worn duckbills can significantly reduce suction strength, compromise milk output, and make pumping less effective. Regular replacement ensures smooth, efficient, and comfortable pumping.
Why Flange Fit Matters (Evidence-Based)
Research and updated clinical guidance show that incorrect flange sizing is one of the most common causes of pumping pain, nipple trauma, and reduced milk output.
A properly fitted flange can:
Improve milk flow and drainage
Reduce nipple friction, swelling, and blanching
Support long-term pumping comfort
Lower the risk of nipple damage and inflammation
💡 Updated evidence suggests that many pumping mothers benefit from smaller flange sizes than traditionally recommended, and nipple diameter, not areola size, is the key measurement.
To determine your flange size, measure only the mid-nipple diameter (do not include the areola), ideally after a pumping or feeding session. Your flange size may be:
Your exact nipple measurement, or
+1mm to +2mm, depending on comfort and nipple response during pumping
Find Your Correct Flange Size
🔍 IBCLC Clinical Insight:
Nipple size is not static. Hormonal changes, pumping frequency, and postpartum stage can cause nipple diameter to change over time. Many mothers benefit from having 1–2 backup sizes to rotate as needed.
👉 For mothers unsure of sizing, the Flange Fit Trial Bundle (3 Different Sizes) is highly recommended.
Made from high-quality, durable plastic
BPA-free, non-toxic, and baby-safe
Steam and UV steriliser safe
Easy to clean and maintain
Designed for long-term, repeated use (ideally to replace every 6 months especially if there are scratches)
Available in 16 sizes: 12mm–27mm (Because one size does not fit all)
Key Features
✅ Pump Compatibility
Compatible with Spectra breast pumps, including:
Spectra S1, S2, M1
Spectra 9+, Dual Compact
Spectra Synergy Gold & Synergy Gold S
Older Spectra models: Dew 350, Dew 360
✔️ No flange adaptor required
Connects directly to Spectra backflow protectors for a secure, leak-free fit.
May connect with other pump brands (e.g. Cimilre, Hegen, Philip Avent, etc.) as long as the tubing can connect to the backflow protector (but this is to your discretion to do so).
❌ Not compatible with Medela pumps
✅ Bottle Compatibility
Compatible with wide-neck bottles, such as:
Spectra
Philips Avent
Maymom
The following bottles are not compatible, but you can get a separate bottle adaptor for them:
❌ Medela narrow-neck bottles
❌ Hegen square-neck bottles
❌ Pigeon wide-neck bottles.
❌ Avent Breastmilk Storage Cups
>> See this article for more information on bottle compatibility
For a full and effective pumping system, you may also require:
Tender Backflow Protector
Tender Tubing (Replacement Tubes)
Duckbill Valve
👉 Please visit the respective product pages to purchase separately.
Complete Your Pumping Setup
Need Personalised Pumping Support?
Choosing the right flange is important, but pain, low output, nipple trauma, or ongoing pumping struggles often need individualised assessment, not just a product change.
If you’re unsure about your flange size, experiencing discomfort, or want to optimise your pumping routine, professional support from an International Board Certified Lactation Consultant (IBCLC) can make a meaningful difference.
1:1 Pumping Consultation (Dedicated & Individualised)
A 1:1 pumping consultation offers dedicated time and personalised assessment, making it the best option if you have specific concerns or ongoing challenges.
This option is recommended if you:
Are experiencing persistent pain, nipple trauma, or poor milk drainage
Have tried multiple flange sizes without improvement
Are exclusively pumping or pumping frequently
Want a deep, individualised pumping assessment
Are returning to work and need a tailored pumping plan
What makes 1:1 support different:
Extended, uninterrupted time focused solely on you
Detailed nipple and breast assessment
Individualised flange sizing and optimisation
Pump settings, rhythm, and suction troubleshooting
Personalised recommendations based on your goals, body, and lifestyle
Pumping 101 Workshop (Group-Based & Practical)
The Pumping 101 Workshop is a small group session designed to build strong foundations and confidence, especially for mothers who are new to pumping or preparing ahead.
What you can expect in the workshop:
Education on evidence-based flange sizing
Guidance on how to measure your nipple diameter correctly
Opportunity to try a few flange sizes (depending on the pump you bring)
Bring your own pump to check basic fit and comfort
Opportunity to try other pump brands, if you wish, during the session
Best suited for mothers who:
Want to understand pumping before committing to multiple parts
Are preparing to pump at work
Prefer learning in a supportive group environment
Do not currently have complex pain or pumping issues
Not Sure Which Option to Choose?
Choose 1:1 support if you want dedicated time or have ongoing discomfort or complex concerns.
Choose the Pumping 101 Workshop if you want education, hands-on learning, and to explore flange options in a group setting.
Many mothers start with the Pumping 101 Workshop and later book a 1:1 consultation if deeper support is needed.
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A flange that is too large may pull excessive areola into the tunnel, leading to pain, nipple swelling, reduced milk flow, and inefficient pumping.
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A flange that is too small can cause nipple rubbing, blanching, cracking, and restricted milk flow.
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Yes. Many mothers naturally have different nipple sizes on each side and may require different flange sizes for comfort and effectiveness.
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If using a food-grade lubricant such as coconut oil, wiping is not necessary. Always ensure the products used are safe for breastfeeding.
But of course, if you prefer, you still can gently wipe it away.
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It’s recommended to reassess flange fit if you experience pain, notice changes in nipple appearance, or during different pumping stages (e.g. early postpartum vs. return to work).