Spectra Backflow Protector
Replacement backflow protector set for Spectra S1, S2, 9 Plus and Synergy Gold pumps. One set covers one side and includes a silicone membrane, an upper case and a lower case.
- $10.49List price
Backflow ProtectorSee it on Spectra's site
How the Backflow Protector stacks up
Against the 34 pump parts and flange inserts we track. The shaded band is where the middle half of them fall; the dot is this one.
Price$10.498th lowest price of 31
Below the typical range for pump parts and flange inserts ($10.99 to $52.49).
This one
$4.99middle $27$89.99
Fits these pumps
Spectra says it fits: Spectra S1, S2, 9 Plus, Synergy Gold.
Listed features
- Sold by the pump maker
- Includes membrane and both case pieces
Worth checking
- One set serves one side; double pumping needs two sets
Where to buy the Backflow Protector
Prices and availability change. We may earn a commission from some links.
good to know
- Check for recalls: Search the agency's recall list with the model number and date code from the label: FDA recalls list.
- Breastfeeding and pumping: see the AAP's breastfeeding pages and the FDA's breast pump page. Check the label and the maker's instructions, and ask your pediatrician about your child.
Full specs
| Spectra Backflow Protector | |
|---|---|
| Type | Pump part or flange insert |
| List price | $10.49 |
| Fits | Spectra S1, S2, 9 Plus, Synergy Gold |
More parts
- SpectraReplacement Tubing$11$11.49
- SpectraDuckbill Valves Set$14$14.99
- PapablicDuckbill Valves for Spectra and Medela$9$9.99
- ZomeeFlex Breast Shields$97 flange sizes$9.99
- MomcozyNipple Ruler$5$5.99
- HaakaaSilicone Nipple Ruler$4$4.99
- ElviePump Spout and Valve Kit (2 pack)$16$16.99
- ZomeePumping Tote Bag$29$29.99
Where these specs come from
Last checked 2026-11-05. Spot something wrong? Tell us. Read our editorial and safety policy and corrections.