pump flange sizes

IMatEllerslie_2

What is the largest size pump flange available to fit a Grundfos 15-58? Are the pump flanges generally interchangeable between the small grundfos pumps?

Thanks in advance for your response.

kevin coppinger_4

I have used....

1 1/2" taco (110) flanges w/ 15-42..I see no reason to not use them on the 15-58's....kpc

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hr

Yes

the various "colors"/ brands will interchange. 1-1/2 is the largest I have seen. Not enough metal between the bolt and center hole to go much bigger

You could use a bell reducer at the flange if you need to go bigger, for some reason, keeping in mind the hole in the pump volute is only about 1" in diameter

hot rod

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Glenn Harrison_2

Watts makes them

up to two inch in an isolator flange set-up

http://www.wattsreg.com/scripts/baserun2/baserun.exe?_cfg=./db/wattsreg-products.cfg&_sn=wattsreg-products&_fil=alltrim(cat)='Isolation_Pump_Flanges'.and.alltrim(family)='Hydronics_and_Steam_Heating'&_tar=_view3