0 items $0.00

(800) 924-3560

Talk to a caregiving specialist (800) 924-3560

Click to enlarge

Designed for the S1, S2, SG, and 9 Plus Breast Pump models
Protects breast milk from outside contaminants
BPA/DEHP-free materials

Spectra Backflow Protector

Size	1 Each Clear

Please select a variation to view pricing options.

First Delivery: March 12, 2026 - March 13, 2026

Save 10% now on 1st Autoship*, 5% on repeat orders

Email reminder 3 days before it ships
Delay or cancel anytime

View Questions

(10% off first Autoship order*)

$9.90

Designed for the S1, S2, SG, and 9 Plus Breast Pump models
Protects breast milk from outside contaminants
BPA/DEHP-free materials

About Spectra Backflow Protector

The Spectra Backflow Protector Replacement is designed for the S1, S2, SG, and 9 Plus Breast Pump models. The Spectra® Backflow Protector is a pivotal component of the Spectra closed system.

Made with Natural Nursing Technology: Combining gentle vibration with soothing suckling action to stimulate milk production, our Natural Nursing Technology simulates the natural way a baby nurses and promotes a more comfortable pumping experience.

Key Benefits & Features

Ensures breast milk is free of outside contaminants
Maintains the proper performance and efficiency of Spectra Breast Pumps
Check with insurance for HSA eligibility
90-day Limited Manufacturer’s Parts Warranty

Spectra Backflow Protector FAQs

What’s included with each protector?

(1) silicone membrane
(1) upper case
(1) lower case protector

If double pumping, you’ll need to purchase an additional Backflow Protector

What is exclusively pumping?

Exclusively Pumping, also known as EP’ing, is breastfeeding your baby by pumping and bottle feeding. Exclusively pumping might mean the baby receives all breastmilk or a combination of breastmilk and formula.

How often do I need to pump?

A typical newborn breastfeeds a minimum of 8-12 times every 24 hours. When establishing a breastmilk supply, it is important to pump every 3 hours (8 times every 24 hours) for 15-20 minutes with a high-quality, double-electric pump to ensure that your breasts have adequate stimulation and milk removal. Once your milk supply is established, you can fine-tune your pumping schedule with your lactation consultant.

How much milk is normal at each pumping session?

The volume of expressed milk will vary greatly depending on many factors. For example, how old the baby is, the time of day, the kind of pump being used, the duration of the pumping session, etc. Some studies show the average pumped amount after 15 minutes is 1.5 – 2 oz from both breasts. The volume may shift over time depending on your baby’s needs.

Will I make enough milk for my baby if I’m exclusively pumping?

Yes, many parents are able to exclusively feed their baby breastmilk while EP’ing. The amount of milk needed for a baby will be dependent on their age for the first few weeks of life. Babies between 1 month to 6 months typically need 19-30oz every 24 hours with an average of 25oz. Most exclusively pumping parents will make enough milk to feed their baby as long as they are following a plan which includes adequate milk removal and breast stimulation.

How can I bond with the baby if I’m exclusively pumping?

Some parents worry that by not feeding their baby at breast they will lose the benefit of bonding that accompanies breastfeeding. There are still many ways to bond with your baby if you are exclusively pumping. One of the best ways to bond with your baby is by doing skin-to-skin, also known as kangaroo care. You can also bond with your baby while bottle-feeding, making eye contact with them, playing with them, singing, talking to them, and reading them stories.

Can I still practice nursing at the breast if I’m exclusively pumping?

Yes, you can still practice nursing and latch your baby if you are exclusively pumping. Your baby may transfer milk, or they may latch for non-nutritive / comfort purposes only. It’s very important that you have a proper latch in order to avoid issues like sore nipples.