When line size butterfly valve is selected for throttling application, there will be lack of control at both low and high flow rates, which means the line size butterfly valve’s effective control range realistically occurs between 30 percent and 50 percent open.
When conditions call for the butterfly valve to operate outside of this range, it typically cycles at low flow and is sluggish at high flow. In these cases, the valve is often switched from AUTO mode to MANUAL, or it is severely detuned. Which means it provides no control at all
Now there is an answer to this control range dilemma: the Fisher Control-Disk.
The Control-Disk valve stretches the control range to begin at 10 percent open and extends the range to 70 percent travel. That’s a 300 percent increase in application coverage!
Watch the animation by clicking the picture below.
This is the official online community site of the Emerson Global Users Exchange, a forum for the free exchange of non-proprietary information among the global user community of all Emerson Automation Solution's products and services. Our goal is to improve the efficiency and use of automation systems and solutions employed at members’ facilities by sharing our knowledge, experiences, and application information.
User Groups |
World Areas |
Community Guidelines |
Legal Information |
Contact Community Manager
Website translation provided by
© 2015-2020 Emerson Global Users Exchange. All rights reserved.