... , buoyancy loss≤5% With reflective tapes, CO2 cylinder and whistle, air release valve ( bobbin) Weight of CO2: 33g Suggest to buy cylinder and ... : After a life jacket falling into the water, the submerged automatic device to soften the water-sensitive components, firing pin stop ... nozzle is a one-way valve, after blowing it will be self-closed. After using, you should release all of gas in ...