As a new generation of speed control valve, the valve to change from the traditional design ideas on mechanical transmission to complete the switching speed change disc mode, according to the different position of butterfly plate movement characteristics, a new design is made from electric drive control. This series of butterfly valve electric device to change the input current frequency, rotation speed and output torque and then adjust the electric device, in order to control the switching speed of the disc, the disc to achieve fast closing and slow off the two stage closed or slow opening, fast opening stage to open two. And liquid control butterfly valve has the same function。
Product use：
The valve is used to pump outlet position of medium is water, the water pipe, as both characteristics of closed-circuit valve check valve, to avoid and reduce the medium in the pipeline system and the backflow of water hammer protection. Especially, pipeline is very reliable for power plant power supply etc.。
四、Product features：
1、Electric opening and closing, with arbitrary adjustment, check and stop function. Easy to operate, safe and reliable。
2、The valve can continuously realize the action of slow opening, fast opening or fast closing and slow closing, and effectively prevents the backflow of the outlet medium of the pump and the generation of water hammer.
3、Energy saving drive, with ordinary butterfly valve the same drive motor can be achieved fast closing small high-speed torque and slow down low torque function。
4、Installed in the pump outlet, the butterfly valve also has a common function of check and gate valve, so a valve on behalf of the two valve, saving installation space, saving pipe network cost。
5、Flow resistance small. When the valve is fully open, the flow resistance coefficient is not more than 0.3, thus saving energy and reducing pipeline operation cost.。
６、When an accident or power failure, you can manually control the butterfly valve opening and closing。
五、Main technical parameters：
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Nominal pressure（MPa）
|
0.25
|
0.6
|
1.0
|
|
Nominal（mm）
|
1000～2400
|
800～2400
|
500～1600
|
|
Test pressure
|
strength test
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0.375
|
0.90
|
1.5
|
|
|
Seal test
|
0.275
|
0.66
|
1.1
|
|
Applicable medium
|
Water and sea water
|
|
Applicable temperature（℃）
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≤80℃
|
|
Installation method
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Vertical and horizontal
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