Electric valve and manual valve difference

Electric valve and manual valve are two common valve types, two kinds of valve applicable conditions have thought, also have complementary, so the specific electric valve and manual valve where is the difference? Bonde valve for you to introduce.

Electric valve

Electric valve is composed of valve and electric device. The valve electric device is generally composed of transmission mechanism (reducer), motor, stroke control mechanism, torque limiting mechanism, manual - electric switching mechanism, opening indicator, etc.

The characteristics of the electric valve are as follows:

1) Fast opening and closing can greatly shorten the time required for opening and closing the valve;

2) Can greatly reduce the labor intensity of operators, especially suitable for high pressure, large caliber valves;

3) Suitable for installation in manual operation or difficult to access the position, easy to achieve remote control, and the installation height is not limited;

4) Conducive to the automation of the whole system;

5) Power sources are easier to obtain than gas and liquid sources, and wiring and maintenance are much simpler than compressed air and hydraulic lines.

The disadvantage of the valve electric device is that the structure is complex and it is more difficult to use in wet places. When used in explosive media, flame-proof measures are needed.

Manual valve

Manual valve is the most basic drive valve. It includes two kinds of direct drive by hand wheel, handle or spender and drive by transmission mechanism. When the valve starting torque is large, can be driven by gear or worm gear transmission, in order to achieve the purpose of omission. Gear drive is divided into spur gear drive and cone gear drive. Gear drive reduction ratio is small, suitable for gate valve and globe valve, worm drive reduction ratio is large, suitable for plug flash, ball valve and butterfly valve.