Propane camping stoves, e.g., Coleman, use the 14 oz propane cylinders.
The same as torches. These stoves have a regulator built in to the
propane "head". And a nipple on the output to attach a hose to.

Propane is stored as a liquid. The vapor pressure at room temperature
is around 100psi. With a built in regulator, the tank psi would be a
non issue. The output pressure is a few inches of water. I.e.,
insignificant.

Bob