Can electric switch-type butterfly valves adjust the valve opening degree?
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Can electric switch-type butterfly valves adjust the valve opening degree?
You also said it’s a on/off butterfly valve; that means it’s a two-position valve without a positioner, and the opening degree cannot be adjusted
If the valve can be stopped midway, it can be held at some intermediate position, though you still won’t be able to tell what that position is. If you add things like positioners, it’s basically just a control valve.
The structure of a butterfly valve allows it to be used as a control valve. Additionally, it is necessary to confirm the specific model and functions of the Denso device. If it is of the switch type, it can be connected to a midpoint for adjustment, but it may not provide feedback on the degree of opening. Some electrical installations can incorporate adjustable modules to achieve opening degree control and opening degree feedback. It is recommended to consult the Denso manufacturer.
Is it possible to set a manual limit? That is, if I set the limit of the butterfly valve at 80%, then when a command is given to fully open the actuator, will the valve open to 80%?
Sure. When you open the cover, you can see two oval-shaped position feedback sensors; the protruding parts come into contact with the touch switch, which stops the motor from rotating. One on, one off. These two oval-shaped things are adjustable. You adjust it to the position you want, and it will stop there from then on.
It is recommended to consult the Denso manufacturer; an adjustable module can be added to achieve opening degree control and opening degree feedback.
The desired switch position control can be fully achieved through the control method. It’s just digital control. That is, to reach the desired position by applying electricity or electrostatic force.
A regulated electric actuator is used, with the control unit located inside the actuator; it receives commands from the central control system based on changes in the parameters being controlled in the pipeline (flow rate, pressure, temperature, level), and uses these commands to adjust the valve to the appropriate opening position. The S4 intermittent operating mode is adopted, with a working frequency of up to 1200 times per hour.