Abstract: A flotation device including an inflatable member, a compressed gas source including a container therefor with a port therein, a seal normally sealing the port, a body member having a bore extending therethrough, a connection member connecting the port of the compressed gas container to the body member adjacent the bore and in registration therewith, a piston member positioned in the bore and movable therein between a first position engaging the seal closing the port in the compressed gas container and a second position spaced from the seal, the piston member having a member thereon capable of rupturing the seal closing the port in the compressed gas container in the first position thereof, an outlet port through the body portion communicating the bore with an inlet opening of the inflatable member when the piston member is in the second position thereof, a piston engaging member positioned on the body member and movable between one position wherein the piston engaging member retains the piston member in the