General Valve application ?
General Valve application ?
(OP)
does the motorized valve always came with hand wheel also. I just queries, that what will happen if the motorized valve don't work & can it open manually ?
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 |
General Valve application ?
|
RE: General Valve application ?
Some smaller 90. deg. electrical actuators without handwheel might be constructed with square spindle allowing movement 90 deg by wrench or similar.
Advice when specifying: 'with handwheel for manual operation' to be included as one of the specifications.
And to answer your question: if not equipped with handwheel or for wrench operation: you will have to demount the actuator to free the valve spindel for manual operation. In some cases this could be unsafe as the actuator could be an active element in the locking in place and/or sealing of the valve.
RE: General Valve application ?
<<A good friend will bail you out of jail, but a true friend
will be sitting beside you saying " Damn that was fun!" - Unknown>>
RE: General Valve application ?
However, a handwheel on the control valve often can override the valves failure mode and could lead to safety issues. Also, with a bypass, you can repair/replace the control valve while still running the process.
Joe Lambert
http://www.control-associates.com/
RE: General Valve application ?