Rectangular piping - flanges

[Mannes Karsten]

Hi everyone,


We're engineering a compressor for a chemical plant. The compressor has a rectangular exhaust pipe, which by a conical nozzle turns into a 20" piping system.
The rectangular exhaust has a width of 410mm x 260mm height. The idea is to create a spool piece at the rectangular exhaust piping.

The problem is the flanges that need to be used on the rectangular pipe. I've read that rectangular flanges aren't good at dealing with high pressure flows? Is this correct?

What would a suitable solution be to this?


Thank you.

 

[TGS4]

Can you quantify what you mean by "high pressure"?

 

[Mannes Karsten]

Casing will be tested with a 6-bar atmospheric pressure.

I'm actually not sure if this is even sufficient information as designing pipework normally isn't in our scope, so excuse my 'ignorance'.

 

[pennpiper]

Mannes Karsten,
I recommend you contact the Compressor Company. In the past any odd size or shape mating was provided by the manufacturer of the primary machine (Compressor, etc).

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

 

[LittleInch]

Weld it.

Rectangular pipe is more commonly called "ducting...."

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[MGZmechanical]

I think EN 12516-2 (design of industrial valves) have some provisions for rectangular flanges