activation device is pushed out of the launching chamber and into the principal process fluid stream the primary valve preferably needs only to withstand enough differential pressure to force the activation device from the launching chamber the primary valve may be a plug valve a butterfly valve a balloon shaped bladder that inflates from the center to seal the main fluid passage a doughnut shaped bladder that inflates from the edges to seal the main fluid passage a pressure operated rubber component similar to those used in bops or inflatable packers or similar type valve as will be appreciated by those skilled in the art the secondary valves may be any variety of on off valves but are preferably designed to be easily removed and cleaned after repeated exposure to particle laden fluids such as cement slurry the secondary valve may be a plug valve a butterfly valve a balloon shaped bladder that inflates from the center to seal the main fluid passage a doughnut shaped bladder that inflates from the edges to seal the main fluid passage a pressure operated rubber component similar to those used in bops or inflatable packers or similar type valve as will be appreciated by those skilled in the art in another embodiment shown in fig2 an external device 8 forces the one or more activation devices from the launching chamber 7 several types of external power are envisioned as shown in fig3 water or fluid connected directly behind the activation device may be used to expel the device from its chamber the fluid is not.