how much PSI can I pump into a tractor trailer inner tube?

Question

using these for tubing on a river. We have filled one and it's quite large but there is nothing registering at all on the tire gauge. How much can you put in before it blows? Keep in mind the tire pressure is different from when it is in the tire itself.

Answer 1

Since the tube is not inside a tire pressure cannot build up. Blowing up the inner-tube in atmospheric pressure will only result in 14.6 grams of pressure youre gauge is not sensitive enough to pick up that small reading. However is you put to much air in the tube it will explode make sure your not facing it if that happens.

Answer 2

Tractor Tire Inner Tubes

Answer 3

Tractor Inner Tubes

Answer 4

The amount of pressure that a tube alone can contain depends a lot on what it is made of, but because all tubes are very elastic it isn't very much. As you inflate it the tube wall becomes progressively thinner and weaker until it bursts. The important thing is that you inflate it just enough to give you the buoyancy in the water and firmness to support your weight. As you noticed, the pressure to expand the tube almost to the point of blow-out will hardly register on a tire gauge. If the tube is inside a mounted tire, then the maximum pressure is whatever the tire is built for because the tire will prevent the tube from expanding to its burst limit.

Answer 5

When the tube is in a tire mounted on a truck, the usual pressure is at least 90 pounds per square inch (psi). When inflating the tube outside of the tire, no more than 2 to 4 psi would be used. The actual pressure at which it blows depends on the condition of the tube, ie. new or used.

Answer 6

Is there really going to be some serious inflating going on or are you just talking hot air ... oh, and can you guarantee not to puncture the rubber?