Got caught out with this today.
Assemble a new BBQ for a property owner, a flash hood unit, has a side ring burner, the hose fitting is not compatible with the regular 9kilo bottle. Apparently all bottles will go to this.
The valve when turned on, will not let gas out, Unless the hose is fitted.
So, your old faithful BBQ, Gas Heater, you will have to upgrade the hose with a new fitting/egulator.
Going to be a lot of people caught out.
You don't use magic to disappear, ya use a 4x4 & Swag.