【正文】 es adjustment of the coupling. Due to the positive stop on the adjustment nut, disengagement of the coupling is allways assured.For each coupling model there are four different function systems available:single position = attempting reengagement automatically in the same position (360176。 Z to stem the number of screw heads.) 4. Stem Diameter: For multiturn type valves for the next shot, if the electric actuator allows the maximum stem diameter of the valve stem can not be dispensed, it can not be assembled into electric valve. Therefore, the electrical device hollow output shaft diameter must be greater than specified under the valve stem diameter. For some rotary valves, as well as multiturn valves in the dark bar valve, although without considering the adoption of stem diameter, but should also take full account of the matching stem diameter and keyway size, so that work can be assembled . 5. Output Speed: valve Kai, closed fast, easy to produce water hammer phenomenon. Should therefore be under different conditions of use, choose the appropriate Kai and closing speed. 6. The installation, connection method: electric equipment installation for vertical installation, the level of the installation, floor installation。 stem is not passed。因此掌握閥門電動裝置正確的選擇；考慮防止超負(fù)荷（工作轉(zhuǎn)矩高于控制轉(zhuǎn)矩）的發(fā)生就成為至關(guān)重要的一環(huán)。 2．錯誤地調(diào)定了轉(zhuǎn)矩限制機構(gòu)，使其大于停止的轉(zhuǎn)矩，而造成連續(xù)產(chǎn)生過大的轉(zhuǎn)矩，使電機停止轉(zhuǎn)動。 閥門電動裝置的正確選擇和超負(fù)荷的防止是戚戚相關(guān)的，應(yīng)引起重視。 Also a long service life and maintenance free operation are importtant consierations when selecting ，使用壽命長和免維護操作importtant consierations在選擇聯(lián)軸器。 Between the safety element with clamping hub and the other coupling half, there is an elastomer insert made of thermoplastic polyurethane (TPU) absorbing the drive ，有一個熱塑性聚氨酯彈性體插入了（TPU）時吸收的驅(qū)動器的振動。 Costly solutions where the coupling was sealed with a housing are therefore unnecessary該系統(tǒng)可以確保該耦合的外形尺寸保持不變。） multiposition = attempting reengagement in several positions per revolution 多工位 =試圖重新聘用，每革命的幾個位置 full disengagement = plete load separation, must be reengaged manually 全面完成脫離接觸 =載荷分離，必須重新進行手動 load holding = no disengagement occurs but an external sensor can be instantly triggered 負(fù)載控股 =脫離接觸發(fā)生，但沒有一個外部傳感器可以立即觸發(fā) With these four function systems R+W offers a solution for every +寬為每個應(yīng)用提供了一個解決方案。 After installation the disengagement value can easily be changed to siut actual 。特殊鋼制造，甚至完全密封 For applications in the food area it is mostly required to oftect the coupling against aggressive cleaning detergents , liquid media, or ，主要是針對需要oftect侵略清潔劑，液體介質(zhì)，或污垢的耦合應(yīng)用。 The hub type that is appropriate for the application is selected and integrated for the ideal 。 上述兩種方式，無論那種都要考慮電機熱容量給定的時間余量。 6．安裝、連接方式：電動裝置的安裝方式有垂直安裝、水平安裝、落地安裝；連接方式為： 有推力盤；閥桿通過（明桿多回轉(zhuǎn)閥門）；暗桿多回轉(zhuǎn)；無推力盤；閥桿不通過；部分回轉(zhuǎn) 電動裝置的用途很廣，是實現(xiàn)閥門程控、自控和遙控不可缺少的設(shè)備，其主要用在閉路閥門上。 The inserts are calibrated most precisely in order to ensure perfect mounting of the coupling. The otherwise usual, but high pretension of the inserts is thus reduced and the assembly is much easier. If on the other hand the inserts are pressed in at too high pretension, the radial forces occurring with lateral misalignment on the shafts will increase. In addition, there is the risk of too much inner heating of the inserts because of increased flexing work.Made of special steel, even pletely sealedFor applications in the food area it is mostly required to oftect the coupling against aggressive cleaning detergents , liquid media, or dirt. Sealed couplings are also used in cleanroom technology and in very dusty applications. A plete sealing that is optionally offered by R+W avoids leaking grease and at the same time penetration of coupling damaging substances. This solution ofvides all the sealing elements integrated in one ponent. An Oring is inserted in the base element of the coupling and covered by an extended Actuation ring. This system makes sure that the external dimensions of the coupling stay the same. S to stem transmission thread pitch, mm。 part of the rotation Electric device is widely used, is to achieveproduction programcontrolled valves, automatic control and remote control can not be a lack of equipment, its main use in the closed valve. But we can not ignore the special requirements of valve electric device must be able to limit the torque or axial force. Valve Electric installations are usually limited torque Couplings. When the electrical device specification is determined, the control torque is also determined. While in a pr