The invention is a pressurized gas providing and gas pressure regulating device. The invention is a container with an over pressurized second chamber of pressurized gas that can be released to the exterior of the container when a valve that is integrally connected to a piston that along with a first cylinder forms a first chamber that is filled with a comparably less over pressurized gas that pushes the valve open when the gas pressure outside of the container is too low, thereby permitting the over pressurized second chamber to fluidly connect via the valve and thereby increase the pressure outside the container, such as to a volume of gas located below a piston within a fluid dispenser, the first and second chambers are shaped as cylinders and the first cylinder fits within the second chamber.