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isometric abbreviation

isometric abbreviation

(OP)
Hi All,

Does someone familiar with the abbreviation of WR. S on isometric below?


Sometimes WR. S, sometimes WR. E or WR. N and it always pointing to the hand-wheel.

Thank you in advance,
Regards,
MR

https://nosuchvalve.com
All valves will last for years, except the ones that were poorly manufactured; are still wrongly operated and or were wrongly selected

http://www.eng-tips.com/faqs.cfm?&rat1=2&f...

RE: isometric abbreviation

Danlap,
Your clip did not show the North Arrow of the Isometric
Don't know, never seen that before, so just guessing:
WR = Wrench
S = South
E = East
N = North
W = West?

I am also interested in the "scribble" at the weld of the flange connected to the Valve, what is that?

Sometimes its possible to do all the right things and still get bad results

RE: isometric abbreviation

That is odd. I've never seen the WR either, but all I can think is like Pennpiper has said, it stands for "Wrench South".

Assuming that this is possible of course, since we do not have a North arrow to reference.

Typically, I have just seen "Stem N/S/E/W", but since it is pointing straight at the lever, I assume it is referring to the same thing.

RE: isometric abbreviation

(OP)
Hi pennpiper, DGrayPPD,

Thanks for the feedback, my excuse for not really clear on isometric. Kindly find below the more broader POV


If this is "Wrench" for WR and the last one letter is Course. Still my naive question would be, what does it stand for pragmatically?
Is this for civil/construction purpose, or something that operator should take into consideration?
CMIIW, in most country CCW is to close the valve and CW is to open the valve.

Not really sure whether the scribble define is socket welded or butt welded for the welding neck flange.
Thanks again,
Regards,
MR

https://nosuchvalve.com
All valves will last for years, except the ones that were poorly manufactured; are still wrongly operated and or were wrongly selected

http://www.eng-tips.com/faqs.cfm?&rat1=2&f...

RE: isometric abbreviation

Danlap,

In my opinion, it appears that the "WR. S" is referring to the ball valve lever needing to be orientated towards the south. This is shown so that the valve is properly oriented during erection of the spool by the contractor. The valve should be oriented for ease of accessibility, operation, and maintenance. The scribble, yes, is just to symbolize the butt welds. I have seen it many times before. You are dealing with a 6" NPS line, so all fittings will be butt welded. If you notice, the olet and nipple connection that is just east of the ball valve in question does not show the same butt weld "scribble" symbol.

The only thing that still doesn't seem to make sense to me is that normally the valve stem would be oriented south in the model and the generated isometric would reflect it (see image below). Could just be a software thing though. If it is not, and the "WR. S" stands for something else, then I am not sure because I have never seen that particular abbreviation on an isometric.

RE: isometric abbreviation

(OP)
Hi DGray,

Highly appreciate for your feedback. It is clear for me now. Despite the uncertainty that only the drafter knows years ago.

Kind regards,
MR

https://nosuchvalve.com
All valves will last for years, except the ones that were poorly manufactured; are still wrongly operated and or were wrongly selected

http://www.eng-tips.com/faqs.cfm?&rat1=2&f...

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