TWO WAY VALVE
Operating position for two way valve can be either shut(closed) so that no flow at all goes through, fully opened for maximum flow or some times partially open to any degree in between many valve are not designed to precisely control immediate degree of flow, such valves are considered to be either open or shut. Some valces are specially designed to regulate varying amounts of flow. So because of their ability to regulate flow they are also called regulating valve
The special feature of two way is that it can not only regulate but it can also make vehicle move back and forth. By opening in forword direction, the vehicle moves forword, while the valve backwords the vehicle moves backwords making a reverse motion.
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