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QGJ43F tank truck emergency shut-off valve liquefied petroleum gas, liquid ammonia is a safe emergency shut-off valve protection valve, with the groove cars and tank installed in the main gas-liquid interface, only the fast closing valves, can be a certain distance in the field and through hydraulic, pneumatic machinery for fast close. When the external causes of fire such as the environment temperature to the specified scope, the use of fusible parts, valve automatically shut down quickly, from a security role. The valve installed in fixed and mobile tanks and tankers, as the emergency cut off and cut off to prevent accidents with over-current safety devices.
