4 inch flange for header

Luv'nsteam

I am looking for a 4" flange to install my steam boiler header.  I have found a couple options, but I am not sure what to do. 

Pexsupply offers a 4" flange union: <a href="http://www.pexsupply.com/Ward-FCIFLU4-4-Black-Cast-Iron-Steam-Flange-Union-456000-p">http://www.pexsupply.com/Ward-FCIFLU4-4-Black-Cast-Iron-Steam-Flange-Union-456000-p</a>



Grainger offers a "dielectric" flange union that looks pretty much like the Pexsupply part:  <a href="http://www.grainger.com/Grainger/WATTS-Dielectric-Union-1LPJ3?Pid=search">http://www.grainger.com/Grainger/WATTS-Dielectric-Union-1LPJ3?Pid=search



Grainger also offers an 8-hole flange for 4" threaded pipe that if I use this, I will need two and a gasket:  [url=http://www.grainger.com/Grainger/Flange-4TXF9?Pid=search]http://www.grainger.com/Grainger/Flange-4TXF9?Pid=search



And a four-hole flange:  [url=http://www.grainger.com/Grainger/ANVIL-Flange-4KWH2?Pid=search]http://www.grainger.com/Grainger/ANVIL-Flange-4KWH2?Pid=search



However, the gaskets I found on Graingers site for both the 4 & 8 hole flange is neoprene and will only handle up to 190 degrees: (link for 8-hole flange) [url=http://www.grainger.com/Grainger/Gasket-1TUT5?BaseItem=4CYX2]http://www.grainger.com/Grainger/Gasket-1TUT5?BaseItem=4CYX2



I am looking at Grainger because I get a large discount on parts, but getting the right part the first time is most important.

 

Any ideas/suggestions/guidance will be much appreciated.

Thank you</a>

Luv'nsteam

Check this out

While I am puzzled no one replied, I am not one to wait patiently.  That said, check this out:  I just found this cast iron, American made, 4" flange union that is likely decades old but brand new!  I had to blow the dust off it.  Cost: $31.50, complete!!!!!  Perseverance always pays off!



Mike