DiscreetDuo Flow Extra Pumping Set: What's Included & How to Use
By Love your time together | Lansinoh | Published: 2026-10-25
Category: How-to Guides
Learn what comes in the Lansinoh DiscreetDuo Flow Extra Pumping Set and how to use each component for efficient milk expression and storage.
Quick answer
The DiscreetDuo Flow Extra Pumping Set includes everything you need for efficient milk expression and storage: a pump set, diaphragms, milk valves, milk collection cups, and flanges with inserts. This guide walks you through each component and how to use them.
Understanding the Components
The DiscreetDuo Flow Extra Pumping Set is designed to support your pumping needs with a complete collection of essential components. It includes a pump set, diaphragm (2ct), milk valves (2ct), milk collection cup (2ct), and flange 24mm (2ct) for a comprehensive pumping experience. The set also comes with flange inserts in 17mm, 19mm, and 21mm sizes to help you find a comfortable fit.
Why Fit Matters
Proper flange fit is crucial for comfort and milk output. The included flange inserts allow you to adjust the size, which can help prevent nipple friction and improve milk flow. If you experience discomfort or reduced output, try a different insert size.
How to Use the DiscreetDuo Flow Extra Pumping Set
- Step 1: Assemble the pump set: Attach the diaphragm to the pump set body, then insert the milk valve. Ensure all parts are dry and free of debris. Common mistake: Forgetting to align the diaphragm properly, which can cause air leaks and reduced suction.
- Step 2: Choose the right flange size: Select the flange (24mm included) and, if needed, a flange insert (17mm, 19mm, or 21mm) that fits your nipple size comfortably. The insert should grip your nipple without pinching. Common mistake: Using a flange that is too large or too small, leading to discomfort or poor milk expression. If you feel pain or see nipple rubbing, try a different insert size.
- Step 3: Attach the milk collection cup: Secure the milk collection cup to the flange assembly. Make sure the cup is clean and dry before use. Common mistake: Over-tightening the cup, which can cause difficulty removing it later.
- Step 4: Connect to your breast pump: Attach the pump set tubing to your breast pump (compatible with Lansinoh pumps). Ensure a snug fit. Common mistake: Loose tubing connection, which reduces suction power and milk output.
- Step 5: Pump and store: Start pumping at a comfortable suction level. Once finished, disconnect the cup, seal it with a lid if available, and store milk in the refrigerator or freezer. Common mistake: Leaving milk at room temperature for more than 2 hours; refrigerate or freeze promptly. Always label your milk with the date and time before storing.
Product Facts
- DiscreetDuo™ Flow Extra Pumping Set: The DiscreetDuo Flow Extra Pumping Set includes a pump set, diaphragm (2ct), milk valves (2ct), milk collection cup (2ct), and flange 24mm (2ct), plus flange inserts in 17mm, 19mm, and 21mm. This all-in-one kit saves you from buying parts separately and the multiple insert sizes help you dial in a comfortable, efficient fit.

DiscreetDuo™ Flow Extra Pumping Set
