Large Diameter Slip On Flange

[ianmcdz]

I noticed B16.47 doesn't mention anything about slip on flanges - why is this? Is there some other standard that does?

 

[StevenHPerry]

It's been a while, but I have used Alaskan Copper for some larger specialty flanges in the past. As I remember, they have some of their own designs which are not exactly standard.

- Steve Perry

http://www.linkedin.com/in/stevenhperry

 

[unclesyd]

You aren't looking in the right place. Notice the size and ratings limits.

http://www.pacificflange.com/catalog.html

http://coastalflange.com/?gclid=CMS6zZyyjKQCFdVb2godJGSQJQ

 

[ianmcdz]

Thanks I checked out those websites, according to:

http://coastalflange.thomasnet.com/...d-class-150-series-a-slip-on-bolting-matches?

...there are no standards that govern 26"+ slip on flange dimensions.

I had already found dimensions based on industry practice in Trouvay & Cauvin Piping Equipment 2001... but our 36" slip on flanges have a smaller hub length than listed.

My next question is: What is the procedure for repairing slip on flanges? Would it result in funky hub lengths?

 

[tr1ntx]

from Texas Flange's catalog:

"For Slip-On’s over 24” you must refer to either Industry Standard (which are not automatically covered by ASME) or Boiler Code Flanges."

texasflange.com - they have dimension tables for the large sizes

 

[JStephen]

There is an AWWA standard for plate-type flat-faced flanges up to very large sizes, used for waterworks service.