[Stephie]

I don't know what they're actually called and I need suggestions for better search terms. I have extremely narrow tubing that can just about fit onto NB cups, even though it's a smidge narrower than NB tubing. There is absolutely no way it will fit over the huge Kangzhu "nipples". I've successfully connected real NB tubing to the Kangzhu cups, but it was so incredibly tight that the end of the tube tended to slowly "spit out" the cup over the course of the session, and it tore during the third session. Forcing this tubing to fit onto the kangzhu cups is obviously not an option, but I have no idea what kind of adapter I'm looking for. They may not even be called "adapters".

I can't just buy larger tubing because then it won't fit onto my electric pump. I could also just give up and buy some NB cups, but it seems a shame to just throw away my brand new Kangzhu cups, even though they were dirt cheap and arrived with one broken airlock.

[AbiDrew85]

Okay, first a question, well, a couple. Do you know the ID and OD of the tubing you do have that fits your pump? If not, do you have a ruler capable of mm or 1/32" measurements or at least 1/16"? Those are the most common measurement standards for tubing. I DO know some of the places online where you can buy such things, but I need to know what your input tubing would be. The output tubing is clearly going to be the same as NB, and I already know what that is since I own a NB myself, it's 20mm for the record, as a European product it uses the metric standard.

[Stephie]

Thanks, I'll ask the person who made the pump, since he also provided the tubing. I need tubing bigger than NB tubing because I already tested and it was so tight that it tore diring the third session. I cut off the damaged part and reattached it, but I already see a small tear forming. Ill measure the kangzhu domes to figure out what size I need. Thanks so much for the help by the way.

[Stephie]

I meant that it tore at the point where it attaches to the kangzhu cups. The narrower tubing wont even fit on the kangzhu cups no matter how much I heat it.

[AbiDrew85]

Yikes! You didn't mention that before. Yes, it's definitely going to need to be bigger than that then.

The one thing that is NOT possible, is if one is in metric and the other in imperial. However, we can usually approximate one or the other and it should work, as long as it's not so big as to not hold or so small as to tear.

[susancd]

are you looking for something like this tubing connector or this straight connectorallows different size tubing to connect together can get at any auto parts store they also sell tubing if you know inner diameter and length