United Moulders Re-Arming Pack Manual 33g - LIF2800

A life jacket inflator which should always carry with you on board. The UM uses a screw on cartridge and self activates when submersed or in contact with water. The smart firing mechanism is constructed from a compressed high powered spring held by a paper element. In contact with water the paper element dissolves and releases the spring and allowing to the firing mechanism to puncture the CO2 cylinder.