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DHW recirculation pump attachment

I'm looking at the Grundfos up10-16 recirculator, which does not have flange attachments. I have the option of sweat or NPT. Can anyone recommend a way to attach this with ball valves on each side that will make swapping out the pump quick and easy?


  • roundrightfarmroundrightfarm Member Posts: 54
    Also forgot to ask if anyone has experience with the auto adapt option on these pumps. Is it worth the extra money for this feature? Does it work well, or does it leave you with cold water occasionally u if you are up late at night?
  • hot_rodhot_rod Member Posts: 12,928
    Either a couple sweat valves or you can find mip x sweat valves to thread into threaded flanges
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    The magic is in hydronics, and hydronics is in me
  • HVACNUTHVACNUT Member Posts: 3,083
    Between the valves and the pump with NPT ports, install brass unions for easy service or replacement.
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