Which is better, electric butterfly valves or pneumatic butterfly valves?
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In mud pipelines (DN300) with a high sand content, is an electric butterfly valve better or a pneumatic butterfly valve? Asking the experts for advice~~~~~
Pneumatic is preferred over electric whenever possible. It also depends on the on-site conditions; if there’s no gas, using an electric version is simpler
Electric and pneumatic ones are the same; these are all actuators. As for the valves to be used in \"slurry pipelines with a high sand content (DN300)\\", it is sufficient to choose suitable valves; the actuator has little impact on this.
Valve selection is based on actual operating conditions; what you’ve said is too general, making it difficult to give a response. 1. Is frequent operation required? 2. Are there any requirements regarding response time? 3. Is a gas source available on site? Electric systems have their advantages, while pneumatic systems have theirs own benefits.
1. Actions are not frequent. 2. There is no requirement for response time (1 or 2 minutes are both acceptable). 3. Both gas and electricity are available on site. I mainly want to understand the approximate advantages and disadvantages of pneumatic and electric options in our operating conditions. Thank you for your answer~~~
If pneumatic power is available, it can be used; the cost is much lower. However, in winter care must be taken regarding the drainage of the air supply, as freezing is common in northern regions, and maintenance requirements are relatively high. Denso components are significantly more expensive. If time is not a concern and minimal maintenance is desired, Denso is the better choice; power plants generally use Denso components as they are more hassle-free to work with.
Thank you for your reply, hero~~~:)
In what situations are solenoid valves and positioners used in conjunction with pneumatic valves?
If there is a possibility of the valve plate getting stuck, Denso’s level of protection is higher than that of pneumatic actuators~~~~
The electrical installation is simple, and maintenance is easy. The downside is that the valve cannot be closed fully, it tends to get stuck, and this can damage the valve seat as well as the sealing surface of the valve disc. It can also easily burn out the motor. Wear out the gears. Recommended brands are Yangxiu, or Rotok, Oma. The pneumatic actuator solves the problem of ice formation in condensate water during winter, and it can automatically compensate when it gets stuck. There are many brands. Wuxi Shenghans is a good choice for domestic products. There are many imported brands now.