Anyone use valve extenders for non-removable core TPU tubes?

Triathlon Forum
1

Anyone use valve extenders for non-removable core TPU tubes? I’ve got the TPU tubes where the valve cores cannot be removed, and I’m wondering if there’s any problem of using a valve extender (the type that you have to just leave the presta valve in open position, without removing it) to inflate the tire.

2

I use valve extenders on latex tubes.

I am sure that there are thousands of people that use valve extenders on TPU tubes too.

3

I use valve extenders on latex tubes.

I am sure that there are thousands of people that use valve extenders on TPU tubes too.

Hoping they’ll chime in here! There’s scant reports of people doing this when you google it.

I too use valve extenders on latex tubes, not sure if there’s a problem with the TPU at the stem adhesion , etc.

4

I use them and have zero issues - I use a small bit of teflon tape to keep the valve open before screwing on the extender.

5

Are the valves on TPU tubes made out of some unusual material?

6

Are the valves on TPU tubes made out of some unusual material?

I think they are glued on
.

7

I use them and have zero issues - I use a small bit of teflon tape to keep the valve open before screwing on the extender.

^^^^^This.

There really isn’t a difference with TPU tubes vs. latex or butyl for this other than the fact that some TPU tubes use plastic valve stems while most other tubes use metal. I’m just careful not to crank down too hard when screwing the extenders on so as not to crack the plastic.

8

for Ridenow TPU tubes, the valve stem is very flexible, so normal extension that has the valve on it did not seal well - when I tightened it, it just kept turning. So I put the valve back into the stem and used an extender that does not have a valve. You basically keep the valve open and the air pressure holds it from letting air out and the extender protects it. You can pump it up as normal, but need something long and thin to stick into the extender when you want air out.
This worked for me with no air leaks at all.

9

Are the valves on TPU tubes made out of some unusual material?

I think they are glued on

What material are they made of?

10

If the extender doesn’t have a valve how are you getting a pump/inflator to seal well?