adjusting valve

adjusting valve

The adjusting valve is also called control valve. It is generally used in the control system of the industrial automation. The adjusting valve can regulate the technological parameters of media including flow, pressure, temperature and liquid level through the power operation by receiving the control signals outputted by the control unit. Generally speaking, the adjusting valve is composed of the valve and actuating mechanism. According to the features of motion, the valve can be operated on the basis of into linear motion or angular motion. According to the actuating power, there are pneumatic adjusting valve, electric adjusting valve and hydraulic adjusting valve. The adjusting valve can be widely applied to regulate the flow of the media including air, water, steam, some corrosive liquids, slurry and oil and so on.

In order to maintain the normal work of the adjusting valve, the actuating mechanism must be able to produce adequate output force to ensure the high sealing and the open of the valve. The double-acting pneumatic, electric and hydraulic actuating mechanisms have no back-moving spring. The intensity of the force has nothing to do with the moving direction, so the key to choose actuating mechanism of adjusting valve is to understand the maximum output force and rotating torque of electrical machine. After the output force is confirmed, suitable actuating mechanism can be chosen. Pneumatic actuating mechanism can be equipped to prevent explosion. Electric actuating mechanism can be applied to save the energy. The hydraulic actuating mechanism can maintain the high adjusting accuracy. Generally speaking, three aspects should be taken into consideration when the clients choose the most suitable acting modes of an adjusting valve. The first one is the safety of operation, the second one is the characteristics of the media and the third one is the quality of the product.