GRUNFOS SUPERBRUTE 26-99 3 SPEED

Post in 'The Boiler Room - Wood Boilers and Furnaces' started by jimde, Feb 15, 2010.

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  1. jimde

    jimde
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    I am placing a Grundfoss 26-99 circ for my boiler storage tank loop and was wondering if I need a cast iron or bronze circ? I was told bronze,but the cast is $150.00 cheaper.
     
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  2. webie

    webie
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    Jim I beleave you are planning a closed loop system ( pressurized ), There for a cast iron pump is all you need . If you had an open system as in some of the outside boilers or if you were useing it for circulating DHW then you would need a bronze or a stainless .
     
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