The MX 1230 Fire Extinguishing System uses 3MTM NovecTM 1230 extinguishing agent that is stored in the system’s extinguishing agent container(s) until system activation. The container assembly includes a welded steel cylinder filled with NovecTM 1230 agent, assembled with the following components: Cylinder valve with burst disc Contact pressure gauge with pressure switch, protective neck ring, protective cylinder cap and valve cap Three cylinder sizes are available: 140, 280, and 390 lbs. (52, 106, and 147 l) Cylinders are designed, manufactured, and labeled in accordance with the US Dept. of Transportation Standard DOT 4BW-500. Cylinders can only be installed in the upright position. To create the pressure necessary for the agent to be released, the extinguishing agent container is superpressurized with nitrogen at a pressure of 360 psi (25 bar).