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Injection is one of the most used methods on plastic molding. The development of the mold is a very important procedure and requires time before the product is injected. An injection mold has a main runner, a secondary runner and the injection gate. The submarine gate is widely used, for allowing the automatic parting of the injected product from the runner system at the time the mold is opened. By literature reviewing, it can be noticed that the authors do not have accordance relative to the diameter dimensions of the secondary runner and the injection gate. This research's objective is to analyze and compile the best indicated values, with the aid of CAE tool, to submarine gates, for them to be used as reference for future studies.