Last Updated: Jun 5, 2023 @ 4:17 pm.

What are the best spare parts for Spectra's breast pumps? To keep your pump in tip-top shape, Spectra says you should replace parts like membranes (2 weeks to 2 months) duckbill valves (1-3 months), backflow protector (3-6 months), shields (6 months) and tubing (occasionally). This can get rather pricey. But there is good news: we found several affordable replacement kits and parts for Spectra that are excellent quality. Here's what we'd recommend.

FYI: We are Baby Bargains, the #1 online resource for honest and independent baby gear reviews. We don't take money or freebies from brands we review. Baby Bargains is 100% reader-supported! Thanks for reading this article.

Buy Now
Buy Now

Best Complete Set

Longer tubing than what comes with pump
This kit has it all: flanges, valves, tubes, backflow preventers, bottles and flanges. Great as a backup. Good quality, although we wished the valves lasted longer.
$34.99 ($34.99 / Count)

Check on Amazon

Best Complete Set: Maymom Pump Parts Spectra S2

When it comes to breast pumps, think of Murphy’s Law: what part can break, will break  . . . especially when you need it the most!

That’s why we recommend keeping a raft of spare parts on hand for any breast pump, Spectra included. One way to be prepared is to have a complete set of parts ready as a backup. For this, we’d recommend Maymom’s Pump Parts for Spectra S2. Here’s why:

What We Liked

• When we say complete set, we mean COMPLETE. This set has a two 24mm flanges, 2 duckbill valves, 2 tubes, 2 backflow protectors; 2 bottles with travel cap.

• Yes, collection bottles are included—for whatever reason, other sets tend to omit this.

• BPA-free.

• Parts can be sterilized by boiling, steaming or microwave steamer.

• Longer tubing (42″ vs 33″) than what comes with the pump—a nice plus.

• Affordable considering all that you get.

• Good as a backup.

• Different sizes of flanges are available.

What Needs Work

• Lids on the bottles can break if you aren’t careful.

• Valves could last longer. Spectra’s own valves seem to last longer, in our opinion.

• Flanges aren’t exactly the same size as Spectra’s. They are close, but not the same.

Buy Now
Buy Now

Best Duckbill Valves

Easy on the wallet
Great replacement duckbill valves are good quality and BPA free silicone. Compatible with a wide variety of Spectra pumps, but they can be a bit louder than the OEM version.

Check on Amazon

Best Duckbill Valves: Maymom Duckbill Valves for Spectra

Duckbill valves for Spectra pumps have to be replaced every one to three months—if you nurse and pump for a year, that’s a lot of valves!

We like Maymom’s duckbill valves as a good, affordable alternative to Spectra’s own valves. Here’s why:

What We Liked


• Good quality silicone gives same suction power as Spectra’s own valves.

• Six valves in a pack = easy on the wallet.

• Come in various pack sizes and colors. 

• Works with many different Spectra pumps (double check first for compatibility before ordering).

What Needs Work

• Loud. For some reason, using these valves on a Spectra makes the pump somewhat louder. We didn’t think it was that noticeable, but it bothers some folks more than others.

• Not made by Spectra.

• Durability. We wished these valves lasted longer. In our opinion, they seem a bit less durable than the Spectra OEM parts. That said, they are still a good value that performs well for most folks.

Buy Now
Buy Now

Best Single Bottle Kit

Dishwasher safe, excellent quality
Made by Spectra itself, this single bottle kit is complete with all the parts you need: flange, tubing, backflow preventer, duckbill valve, bottle and cap. Caveat: this is just for ONE bottle!

Check on Amazon

Best Single Bottle Kit: Spectra Baby USA Premium Accessory Kit

If you just need a single bottle set, we think Spectra’s own Premium Accessory Kit is a good bet. Yes, these are original manufacturer parts—good quality and nice to have as a backup just in case.

What We Liked

• Complete set for one bottle.  Includes 1 wide neck flange (24 mm), backflow protector, tubing and white duckbill valve, wide neck bottle (with cap, collar ring and sealing disk).

• Durable.

• Dishwasher safe. 

What Needs Work

• Pricey.

Buy Now
Buy Now


Great as a shower gift
Yes, this is a double kit—2 flanges, 2 duckbill valves, 2 tubing sets, 2 backflow preventers. Dishwasher safe (except the valves), BPA free. Easy to use and good quality.

Check on Amazon

Budget-Friendly: Nenesupply Pump Parts Compatible with Spectra S2 and S1

Why is this pick budget-friendly? That’s because Nenesupply’s Spectra parts kit is a double bottle kit—for a price that is very similar to a SINGLE bottle kit from the original manufacturer. The only major difference: bottles. Nenesupply doesn’t include bottles, while Spectra does.

However, most folks probably already have bottles if they are buying a spare parts kit for a Spectra breast pump. This set is a great value nonetheless! Here’s more:

What We Liked

• Good quality.

• Everything but bottles. Includes 2 flanges, 2 duckbill valves, 2 backflow protectors, 2 tubes.

• Works with wide mouth bottles,

• Dishwasher safe except the values. 

• Can sterilize with steam or boiling water.

• BPA-free.

• Affordable.

What Needs Work

•  Not compatible with all collection bottles. This set only works with Spectra bottles, Avent bottles, and Nenesupply’s own wide mouth bottles.

Why Trust Us

We’ve been rating and reviewing baby gear, including breast pumps, since 1994. We do hands-on testing—we buy the products with our own money and evaluate with an eye toward quality, ease of use and affordability.

Here’s another key point: we don’t take money from the brands we review. No free samples, no sponsors, no “partnerships.” Baby Bargains is your independent and unbiased source for expert baby gear reviews.

Baby Bargains: Your Baby Registry Cheat Sheet is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to and its related sites. As an Amazon Associate, I earn from qualifying purchases.