Kinda dumb valve stem extender question

[RCtime]

The extension that screws on to your inside dually that extends to the outside dually so you can check the air pressure/add air etc.
Does it have one long valve core in that presses down on the valve core of the inside tire?

Why my interest? While checking my air pressure the other day, while removing the cap, the whole extension rotated. I tightened it and continued my air check. But just wondering as the extension looked as if a normal valve core was installed.
Looking between the duallies you can see its just screwed on to the normal valve stem.
the inner dually on mine was perfect at 100# even though the extension was loose.

[j-d]

MEX,

There are "airless valve stem caps" that add about an inch. You can also screw two of them together. If you look at the Tire-Man/Chuck Carvitto/Ridgecrest site, they come with Chuck's custom valve kits.

They're called Gator, Crocodile, V2B and probably other pet names but Schrader offers them, can be bought through Six Robblees and are on card display at NAPA stores. They're not just Airless. They are also meant to be Capless. Just walk around the vehicle with your air gauge, push and check. I can check all six on our Class C in a couple minutes. Depends on my speed at moving wheel-to-wheel, crouching, remembering glasses to read the gauge, if I have shoes on or treading carefully in the crushed stone on one side of the RV. Still WELL under five minutes. 90191 - Tire Valve Cap / Extension - MFG Part: 90191{NAPA NTH90191}
Manufacturer: NAPA
MFG Part number: NAP90191-X10

[Harvard]

These particular extensions (see photo) are pressured up all the time.

[Clay_L]

MEXICOWANDERER wrote:
I am looking for RELIABLE 1" valve stem extensions. I want to join the OP's club as I haven't a clue as to what to look for in valve stem extensions. The ones I have tried caused problems not made it easier to air up tires.

DuallyValves are not cheap but work well. I did not see my rim/tire on the TireMan site but these guys have them HERE
I put them on at seven years when I replaced the tires and afterwards wished I had done it years ago. They make it so easy to add and check air.

They are not extensions but are new metal valve stems.

[Bobbo]

A bit pricey, but these work great. I used the extenders (whatever Winnebago installed) until I replaced my 7 year old tires. While the tires were off, I had these installed.

http://www.ridgecrest.ca.us/~tire-man/products.html

[fj12ryder]

With my wheels, stock 2001 Dodge 3500, I found that once I got the correct angled chuck and pressure gauge I didn't need the extenders. I did have to notch the wheel covers so the they would fit correctly.

I don't understand why dually manufacturers don't actually try to check the dually tires, then maybe they'd design them so they could be accessed fairly easily.

[Camp__Forrest__]

I had the original rubber ones removed and replaced with metal extensions when I got new tires. They work perfectly. The valve is the same Schrader valve as a rubber valve stem, it's just on the end of a three inch tube.

[MEXICOWANDERER]

I am looking for RELIABLE 1" valve stem extensions. I want to join the OP's club as I haven't a clue as to what to look for in valve stem extensions. The ones I have tried caused problems not made it easier to air up tires.

[Clay_L]

fj12ryder wrote:
None of the ones I've tried have a valve core that extends to the tire valve core. Maybe that was why they all failed sooner or later. 🙂

Stop by Palisade CO and I will give you a set of the airless ones with the long wire (actually a hard twisted cable).

They have to be adjusted very carefully. Mine were set so close to opening the valve that heat from the tires caused them to lengthen just enough to barely open the valves and leak.
I lost two dualies that way. One was really low and just as I pulled into a rest stop to check on it, the one on the other side blew. The air should have been contained in the extender body but wasn't.

[fj12ryder]

None of the ones I've tried have a valve core that extends to the tire valve core. Maybe that was why they all failed sooner or later. 🙂

[Clay_L]

Some work as you describe but some don't. The "airless" ones are a little more costly I think.