Do I need to wash these before using?

I would. I used the Medela steaming bags that you can get to clean the equipment. I don't steam the bottles any more though, they seemed to crack.

Are these compatible with the Freestyle?

I have the pump in style, but I believe all the accessories can be used between all Medela pumps so you should be fine

Will these fit the Spectra S1?

These will fit the narrow neck flanges (medela and spectra compatible), but not the wide neck flanges that come with the spectra pump. I actually prefer the medela valves over the spectra duckbills, so i use the narrow neck flanges with the spectra pump. There is a long backflow protector you can buy.

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Nenesupply Membranes Valves Compatible with Medela Breast Pumps Compatible Parts for Medela Harmony Manual Hand Pump, Pump in Style, Swing, Symphony. Replacement Parts Accessories

Product ID: 3127052

Details

Brand
NENESUPPLY
Included Components
Membrane
Material
Bpa Free
Operation Mode
Electric
Special Feature
Bpa Free Dehp

💧Steam & boil sanitizable

♻️BPA & DEHP free safe materials

🛠️12-piece precision set

$20.62

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Description

💪 Pump like a pro with premium parts that keep up with your hustle!

PREMIUM SAFETY - Crafted from BPA & DEHP free materials for worry-free feeding
OPTIMAL PERFORMANCE - Delivers the same suction power as original Medela parts to maximize milk output
PERFECT COMPATIBILITY - Seamlessly fits Medela Pump In Style, Symphony, Swing, Harmony & Mini Electric models
COST EFFECTIVE UPGRADE - High-quality replacement parts at a fraction of the original price—pump smarter, not harder
EFFORTLESS MAINTENANCE - Easily removable valves and membranes for quick cleaning and replacement

Nenesupply offers a 12-piece replacement valve and membrane set compatible with multiple Medela breast pump models, made from BPA and DEHP free materials. These parts provide the same suction efficiency as OEM components, are easy to clean via boiling or steam, and deliver reliable performance at a budget-friendly price—perfect for the modern, health-conscious mom aiming for peak pumping efficiency.

Specifications

ASIN	B00GMD8Q5A
Additional Features	Bpa Free,Dehp Free
Best Sellers Rank	#7,923 in Baby ( See Top 100 in Baby ) #351 in Breastfeeding Supplies
Brand Name	NENESUPPLY
Color	White,yellow
Customer Reviews	4.7 4.7 out of 5 stars (2,288)
Included Components	Membrane
Item Weight	18.14 g
Manufacturer	NENESUPPLY
Manufacturer Part Number	N005-4V8M
Material Type	Bpa Free
Material Type Free	BPA Free
Model Number	N005-4V8M
Operation Mode	Electric,Manual
Product Style	4 Valves + 8 Membranes
Size	12 Piece Set
UPC	738435628642
Unit Count	1 Count

Common Questions

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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$20.62

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

View all Trustpilot reviews