Carbonated soft drink attachment

A attachment that can pressurize a container, comprising:

• a housing with an opening, said housing being adapted to be coupled to the container;
• a cartridge within said housing, said cartridge containing a pressurized gas;
• a valve operatively connected to said cartridge, said valve being adapted to move between a closed position and an open position, such that said valve allows said gas to flow through said housing opening and into the container when in an open position;
• a first spring connected to said valve to bias said valve into said closed position;
• a button that can move relative to said housing and is operatively connected to said valve to move said valve from said closed position to said open position, thereby providing a gas pressure within the container,
• a second spring connected to said button and said valve, said second spring provides a spring force on said valve and biases said valve into said open position when said button is moved a predetermined distance, said valve moves from said open position to said closed position in response to said gas pressure within the container reaching a first predetermined level, wherein said first predetermined gas pressure level can be varied by moving said button;
• and, a pressure relief valve operatively connected to said valve and said button, said pressure relief valve allows said gas to flow into the ambient through an opening in said button when said gas pressure within the container reaches a second predetermined level.