One to determine appropriate of electric valve, manual valve valve electric actuator customers must provide a manual valve ( Common valves) Species, such as gate valve, globe valve, butterfly valve, ball valve, the valve structure determine valve electric device works. electric device according to the operation mode can be divided into the Angle of stroke, stroke and more turns. Turn more than 1, multi-turn electric actuator type: need to run more than 360 ° can realize opening and closing of the valve, it is mainly used for cut-off valve, pipe clamp and diaphragm valves; 2, Angle of stroke and stroke actuator is mostly on the basis of rotary and transforming: on the basis of many rotary, match with worm gear and worm reducer of 0 ~ 2 90 ° Angle of electric actuators; With the screw parts straight travel electric actuator. 1) angular travel: 0 ~ 90 ° Angle of journey, is used to control the ball valves, plug valves, butterfly valves and shutter valve quarter-turn valves; (2) straight travel: the output power, is produced by the displacement, used to form a complete set of all kinds of valves on the electric valve or electric regulator ( For example, dampers, single seat valve and linear motion of the valve) Second, the manual valve to determine of electric valve electric device to output force or torque ( Torque) For multi-turn electric device and part of the rotary electric actuator, angular travel for electric actuator, zui important parameter is the torque, the unit is N. m。 open or closed need torque effect to the above, if the moment, is likely to lead to can't shut up, can't open. For straight travel electric actuator zui important parameter is the force, the unit is N. If the small power also can cause the valve cannot open or closed. So, in the process of electric device selection, follow the principle of a simple zui, would rather choose big, can't choose. Three, manual valve to determine valve electric actuator control mode of electric valve type electric devices of this kind of electric device has simple dial shows the switch of the valve, and external control to electric device control box, a zui basic models. The second category; Mechanical and electrical integration of electric device. This kind of electric actuator control box, the so-called mechanical and electrical integration. With LCD display, can feedback 4 ~ 20 ma standard signal, can determine the valve fully open, close, and the uncertainty in the middle of the position, the switch quantity control. Electrical components installed in a reversible plate, so that the torque control mechanism, indicating the stroke control mechanism and the opening mechanism to adjust. Button box, there are three buttons on the middle of the site and the remote switch button, the left valves closed for the button, the right to live open valve button, cover button box for the remote control, remote control for dc 24 v switch contact, open button box for site operation. ( Knob device has two knobs box, one of the way for the knob knob ( Red) And another for the action button ( Black) , rely on electrical housings, highlight the arrows point to the operation mode and operation button clockwise rotation to the arrow to open the valve, counterclockwise to close the valve. ) Third class: external regulation electric device, is on the basis of the electromechanical integration of electric devices to join the analog control, can receive and feedback 4 ~ 20 ma standard signal, which can achieve precise adjustment of the valve, the valve fully open, close, and can be determined accurately in the middle of the position. Four, manual Industrial Valves to electric valve to determine relevant parameters such as the use of voltage, the valve opening and closing time, and so on.
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Shenzhen Mech Valve Trading Co., Ltd. has a number of producing line for producing water gate valve.