Pull off valves (emergency release devices) can prevent leakage accidents caused by accidental pipeline breakage, and are applicable in areas such as ship to shore unloading, tank loading and unloading on highways and railways, as well as other fixed and mobile fluid storage devices, such as crane pipes, fluid transfer arms, and connections between transport carriers.

This device belongs to the weak connection point of the entire transmission process. When the set conditions are met, the pipeline connection is disconnected, and the intermediate medium is self sealed in the pipeline.