The role of vulcanizing machine regulating valve. Although most of the vulcanizing machine is inseparable from the rubber, the type of vulcanizing machine is still different. Because the design used is different, there will be differences in the structure of the finished vulcanizing machine. But whether you choose a hydraulic vulcanizing machine or a flat vulcanizing machine, one of the design principles in these vulcanizing machines will have that is the setting of the flow regulating valve.