Control Valves
Control Valves
(OP)
When looking at characteristics of various types of valves it seems to me that butterfly valves are superior to other types regarding control applications. The control range is wider (0.5 < gain < 2.0) than for both ball and ball sector types.
Can anybody explain me why I shouldn't recommend butterfly valves for control purposes?
Can anybody explain me why I shouldn't recommend butterfly valves for control purposes?





RE: Control Valves
I hope this info satisfy your question
RE: Control Valves
RE: Control Valves
RE: Control Valves
I have made usage of butterfly control valves for modulating service. Typically these have been greater than 4" where other types of valves are not economical. Any control valve must be applied within it's range.
There are some ball valves with minor modifications that can serve as excellent control valves, and have a turndown range of 1:100. However the basic ball valve as you have indicated has a poor ability to modulate flow.
Regards
Dan Price
RE: Control Valves
RE: Control Valves
RE: Control Valves
RE: Control Valves
You would encounter them on gas lines of burners, when in case of a failure (flame, electrical, draft) it would cut off the fuel supply.
Steven van Els
SAvanEls@cq-link.sr