BABYGO® Breast Pump Diaphragm

4.9 out of 5
£5

A spare diaphragm to keep your Air™ pump's suction strong

The diaphragm is the small silicone part that passes the pump's suction through to the flange while keeping milk out of the motor. It's part of the closed system that stops milk flowing back into the pump.

With daily pumping it gradually softens or stretches, and a worn or badly seated diaphragm is one of the usual reasons a pump seems to lose power. With a spare in the cupboard, you can swap it straight away instead of waiting for the post.

It's made for our Air™ pump, single or double. Pump parts aren't interchangeable between brands.

Tech specs

  • For the BABYGO® Air™ Electric Breast Pump
  • Single and double pump
  • BPA-free, food-grade silicone
  • 1 diaphragm per pack

Details

Materials and care

Silicone, BPA free and food grade

Wash in hot, soapy water or on the top rack of the dishwasher, then air dry completely

Make sure it's seated properly when you put the pump back together

In the box

  • 1 x BABYGO® Breast Pump Diaphragm
Delivery and returns
Standard delivery
2 to 4 working days, £3.99. Free on orders over £40.
Next day
DPD next day delivery, £7.99.
Returns
30 days from your order date, unused and in the original packaging. Exchanges welcome. Free with Checkout+, otherwise £4.99 is deducted from your refund.
Full delivery and returns policy ›

Questions, answered.

How do I know it needs replacing?

Look for a tear, warping or stiffness, and watch for weaker suction or sessions taking longer for the same amount of milk. If you ever see milk inside the pump body, stop using the pump and replace the diaphragm before you carry on.

How often should I replace it?

There's no set date. If you pump every day, check it each time you clean it and replace it as soon as it looks worn. Keeping a spare, along with a spare valve, means a worn part never stops a session.

Will it fit my pump?

It's made for the BABYGO® Air™ Electric Breast Pump, the single and the double, which takes one on each side. If you use another brand's pump, check with the maker, because parts aren't standard between brands.

Why has my pump lost suction?

The usual causes are a worn valve or diaphragm, a part that isn't seated properly after cleaning, or a flange that doesn't fit. Check those before you assume it's your supply.

What other spare parts are there?

We also sell replacement valves, flanges and flange inserts in 17mm, 19mm and 21mm for the Air™ pump, so you can replace one part at a time instead of the whole pump.

Reviews

4.9 out of 5, 28 reviews

Customers say this replacement part fits perfectly and restores pump performance immediately. Many reviews highlight its sturdy construction, quality materials, and exact compatibility with their pumps. Users appreciate having a spare on hand for convenience and note it holds up well through repeated sterilizing. The simple installation process requires minimal learning. Most find it excellent value compared to replacing the entire pump. A few mention wishing for multi-packs or note minor packaging issues, but overall customers are highly satisfied with durability and functionality.
4.9
Rated 4.9 out of 5 stars
Based on 28 reviews
100%would recommend this product
28 reviews
  • SB
    Sofia B.
    Flag of United Kingdom
    Verified Buyer
    I recommend this product
    Rated 4 out of 5 stars
    July 20, 2026
    Useful with one small caveat. Saved replacing the whole pump

    One of those small purchases that makes a noticeable difference. It feels as sturdy as the original part and was simple to swap over. There is a short learning curve with the settings, but it becomes simple after a few uses.

  • BR
    Betty R.
    Flag of United Kingdom
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    July 10, 2026
    Sealed correctly

    It has held up well through repeated sterilising. The size matched my pump and sealed correctly from the first use. I would happily recommend it.

  • K
    kayla.lee
    Flag of United Kingdom
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    May 21, 2026
    Holding up beautifully: held up through sterilising

    It was put to use almost as soon as it arrived. Having a spare has made cleaning between sessions much less rushed. I now keep one clean and ready in the cupboard.