Actuated valve control valve means the same thing?
Actuated valve control valve means the same thing?
(OP)
Could anyone please advise me if an actutated valve is a control valve? Is it just a different term for it?
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS Come Join Us!Are you an
Engineering professional? Join Eng-Tips Forums!
*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail. Posting GuidelinesJobs |
Actuated valve control valve means the same thing?
|
RE: Actuated valve control valve means the same thing?
A control valve is a bit generic and covers a whole range of different type of valves, an "Actuated Valve" in my opinion would be one such type of "control valve".
Not only are there many different types of "Control Valve" but there are also many different types of "Actuator" and not every "Control valve" has an "Actuator" as such.
RE: Actuated valve control valve means the same thing?
In my industry control valves are usually only modulating valves.
Chances are they are identifying the actuated valve as opposed to a manual valve. Those actuators are quite a bit more expensive, and maybe somebody is just accounting for it.
Zuccus
RE: Actuated valve control valve means the same thing?
In our company Actuated valves would describe both the on/off types and also modulating types (although we tend to short hand the on/offs as ABVs). However a self contained pressure regulating valve we also describe as a "control valve" but this does not have an "actuator" as such.
I am sure someone who is more up to date with the ISA standards will give a true definition of "control valve" but it does seem to be a little generic and seems to change from industry to industry and company to company.
RE: Actuated valve control valve means the same thing?
An actuated valve imply that it is not a regulator, but has acutation (either on/off or modulating).
A control valve imply that it is controlling a process variable, and can be wither on/off (eg. gap level control) or modulating (eg. typical flow control valve).
"Do not worry about your problems with mathematics, I assure you mine are far greater."
Albert Einstein
Have you read FAQ731-376: Eng-Tips.com Forum Policies to make the best use of Eng-Tips Forums?
RE: Actuated valve control valve means the same thing?
Pig launchers often have actuated valves for both the side valve and the body-isolation valve that are only locally controlled by a manual switch. These are "actuated" but not "control". An ESD is an example of an on/off valve that is controlled by other than manual processes.
Basically, any valve with an actuator is "actuated". Any valve that receives a control signal from a process variable is a "control valve". Any actuated valve that controls based on a local analog "signal" is a "regulator" (which is also a "control valve").
David
RE: Actuated valve control valve means the same thing?
RE: Actuated valve control valve means the same thing?
I just read my latest posting. Either I need new batteries in my keyboard, or a spell checker.
"Do not worry about your problems with mathematics, I assure you mine are far greater."
Albert Einstein
Have you read FAQ731-376: Eng-Tips.com Forum Policies to make the best use of Eng-Tips Forums?
RE: Actuated valve control valve means the same thing?
RE: Actuated valve control valve means the same thing?
A shutdown valve is describing its function/purpose. A shudown valve may be acutated, or manual.
A temperature valve is also describing its function/purpose. It can be modulating, on/off, or manual.
A "manual valve" by definition does not have an actuator (other than your hand).
"Do not worry about your problems with mathematics, I assure you mine are far greater."
Albert Einstein
Have you read FAQ731-376: Eng-Tips.com Forum Policies to make the best use of Eng-Tips Forums?