flange orientation
flange orientation
(OP)
Can someone tell me why most piping diamgrams show drilled holes in bolted flanges straddling the vertical centerline, so as to not have a hole at top dead center?
Thanks
Thanks
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RE: flange orientation
http://virtualpipeline.spaces.msn.com
RE: flange orientation
RE: flange orientation
EJL
RE: flange orientation
In addition to the wise and appropriate answers you have already gotten I will give you two others.
1 - You will find that with the bolts on the vertical centerline there would be a problem with getting a wrench on the nut on some valves.
2 - Many valves, both cast and forged have a reinforcement "Web" right at the "12 O'Clock" position connecting the back of the flange and the rest of the valve body so a bolt hole is out of the question.
RE: flange orientation
RE: flange orientation
RE: flange orientation
My question to the responders of this thread is, "Is this common terminology?" It wasn't for me, but I don't normally get involved in such details.
RE: flange orientation
Explore
RE: flange orientation
RE: flange orientation
http://virtualpipeline.spaces.msn.com
RE: flange orientation
Two-holing makes it easy to fabricate piping using common tools. A fitter with a tape measure, torpedo level, a 4 foot level, and a couple of framing squares will be much more productive than the same guy who's wrestling with the goofy angles left by one-holing.
Unless there's some special reason - and they CAN occur from time to time - why would anybody design a system like this? It's like handing the carpenter the framing plans for a house, with all of the studs on 15" centres.
RE: flange orientation