for most valves, must have certain mechanical facilities or external systems to open and close the valve, or when used as an operating section height change the valve position. Manual turbine, actuator and the actuator system is installed on the valve of these machine maple facilities, in order to open or close operation happened.

manual turbine definition

turbine is manually - Kind of facilities, it requires can provide 鼂 by man to operate the Industrial Valves and to determine the appropriate action ( Open, closed or throttling location) 。 Manual turbine for certain types of mechanical facilities of the physical strength can easily be providing the torque and the valve handwheel or lever converted into mechanical force. Since at the beginning of the process industry, manual turbine have been used and is common. But in the past 30 years, its use has gradually reduce surface to automatic control actuators. The cost of the manual turbine and weakness is obvious. For simple - open Close control, people must use manual turbine is passed on to the valve and the valve to complete this action, the action by manual turbine can be competent.

but due to the accurate requirements process system today, manual turbine far cannot satisfy the Industrial Valves or schedule required action. For working condition of throttling, manual turbine can only guess components are about the position of the valve is closed, these may not be accurate enough for harsh operating. Even the handwheel extra half a rotation, may produce too little or too much of the flow, pressure or temperature, especially for some inherent or installation of flow for sex. In addition because people are slow and not accuracy, in certain conditions is inherent in the high internal force people to use manual turbine can't more than, this is because people physical strength, and even the use of long rod and big wheel. At the same time in business, using human is expensive. Today almost all the factory looking for substitute technology for human, not only because of the cost of human resources, but also for high technology with better accuracy, efficiency and productivity. My

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