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Heating - Variable Speed Pump

If the pump is for potable water then buy the stainless steel version because potable water is oxygenated.  Only in the case of a closed radiant heating system with oxygen barrier PEX is it ok to use the cast iron version.

Stainless version

Taco Variable Speed Stainless Pump 008 

008 Variable Speed Delta-T Stainless Steel Circulator Pump, 1/25 HP

http://www.supplyhouse.com/Taco-008-VDTSF6-1-008-Variable-Speed-Delta-T-Stainless-Steel-Circulator-Pump-1-25-HP   $251.25


Cast iron version

008 Variable Speed Delta-T Cast Iron Circulator Pump, 1/25 HP

http://www.supplyhouse.com/Taco-008-VDTF6-2-008-Variable-Speed-Delta-T-Cast-Iron-Circulator-Pump-1-25-HP   $167.15


Detailed info



Pump Flanges (Stainless)

Pump Flange Stainless 

http://www.supplyhouse.com/Taco-110-251SF-3-4-Taco-Stainless-Steel-Freedom-Flange-Pair  $27.78


Pump Flanges (Iron)

Taco Freedom Flange Iron 

http://www.supplyhouse.com/Taco-110-251F-3-4-Taco-Iron-Freedom-Flange-Pair-1973000-p   $9.19