Approximately how many times do you have to pump these? I removed the ring on the 2 ltr bottle, and after 30 pumps, still no pressure. defective?

We opened one and tested it on a 2 liter bottle that had about 1/3 of its drink gone and it took about 12 pumps to work. However we did leave the ring on our bottle. If you have the ring you may want to place it back on and try it (probably won't help but no harm in trying). I know that it depends on how full the bottle is as to how many times you have to pump it. Also try holding it slightly at an angle and see if that helps.

The pump only seems to pump air at the very end of the stroke—like the last 3mm. Is this normal?

Yes, mine is much the same. Doesn't work exactly like a bike pump where it feels like air is being pumped during the full stroke. I've had mine 8 or 9 years and it's still working great.

Is it good for the internal part of the cap to be in contact with the liquid inside the bottle? Like when you store the bottle horizontally.

I have never stored a bottle like that, however there have been times when the bottom of the fizzkeeper has made contact with the soda and I have never had a problem. I would think it would be OK.

Why is there a warning label that says it contains chemicals that have been known to cause cancer? Which chemical is in this device?

probably because it is made of plastic or i hope so just like the plastic bottles you use it for HaHa

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Fizz-Keeper Pump Cap

Product ID: 264294994

Details

Brand
JOKARI
Colour
White
Material
Plastic
Product dimensions
37W x 37H
Shape
Cylindrical

🔄Patented pump pressurizes

🧴Fits 1-2L bottles

🧼Dishwasher safe plastic

€ 39.91

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Description

🥤 Keep the fizz, skip the waste – your soda’s new best friend!

UNIVERSAL FIT - Designed to fit all standard 1, 1.5, and 2-liter plastic soda bottles—no more wasted fizz.
DURABLE HYGIENIC - Made from sturdy, dishwasher-safe plastic for long-lasting use and easy cleaning.
ECO SMART SODA SAVER - Replace disposable caps and reduce waste while enjoying perfectly fizzy drinks every time.
EFFORTLESS FRESHNESS - Simply screw on and pump a few times to instantly restore pressure and keep bubbles alive.
FIZZ LOCK TECHNOLOGY - Patented pump mechanism seals in carbonation for weeks, so your soda stays fresh longer.

The Jokari Fizz-Keeper Pump Cap is a durable, dishwasher-safe plastic pump cap designed to fit standard 1, 1.5, and 2-liter soda bottles. Its patented pressurizing mechanism preserves carbonation and freshness for weeks by re-pressurizing opened bottles with a few easy pumps, making it an essential gadget for soda lovers who want to enjoy every last bubbly drop.

Specifications

ASIN	B00004XSH3
Best Sellers Rank	#83,966 in Kitchen ( See Top 100 in Kitchen ) #48 in Soda Maker Accessories
Brand Name	JOKARI
Color	White
Customer Reviews	3.6 3.6 out of 5 stars (3,906)
Global Trade Identification Number	00032368050021, 00793842121346
Is the item dishwasher safe?	Yes
Item Dimensions W x H	37W x 37H millimeters
Item Type Name	Jokari Fizz-Keeper Pump Cap
Item Weight	0.02 Pounds
Manufacturer	Jokari
Manufacturer Part Number	5002
Material Type	Plastic
Model Number	5002
Number of Items	1
Shape	Cylindrical
UPC	793842121346 786377188953 793842297409 032368050021 735343694141 798527043302
Unit Count	1 Count

Reviews

X**X

للاسف المنتج لا يعمل، مهما حاولت.

31.01.2026

P**S

I have been looking for these for a long time, until I found them on Amazon, with a lot of searching. I used to have 2 of them many years ago, but they somehow got lost. They do keep the fizz in your pop/soda if you use these correctly. To keep the fizz in pop, you have to pump air "into" the bottle. You have to pump many times, especially if it is a 2-litre bottle. Pump (many times) until the bottle is firm and you are good to go. This acts as a pump and a lid for the bottle. I am so happy to have found these.

3.03.2024

J**S

It is a good product , just need to put in a little work of pumping but then all's good

10.02.2023

D**O

Als ich nach so einem "Teil" suchte, wusste ich nicht, dass es so etwas gibt. Daher einfach mal im Web herumgegrast. Und tatsächlich, es funktioniert total zuverlässig. Kurz gesagt: Kohelsäure bleibt da, wo sie hingehört - in der Flasche! :-)

16.08.2017

M**.

This would probably fit a US soda bottle, but the ones in europe have a shorter thread section and the bottle lid remains attached to the bottle. Even if you remove the lid and use strong scissors to take the plastic ring that holds the lid, it still doesn't make a seal. So we had to return it.

18.01.2024

M**N

Very easy to use and really works. Drinks stay fizzy much longer.

23.02.2024

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€ 39.91

Duties & taxes included

In stock

Sold byAmazon NetherlandsDelivered 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 Netherlands.

Secure transaction

ProDesertcart PRO

Fast, free shipping, member pricing & priority support.

Join PRO →

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

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Customer service was outstanding when I had questions about the product.

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