Heavy Duty Cast Iron Circulator Pump 33 GPM Hot Water Circulation Unit 3 Speed 1 1 4 Inch NPT Flange A Smooth Operator For Radiant Floors And Home Water Heaters Built Rigid For A No Fuss Diy Installation

Cast iron circulator pump for radiant floor heating systems
✔️ Single unit features 33 gpm flow 1 1/4 inch flange three speeds

You get this single heavy cast iron unit to move heated water through your home piping.
It fits right into basement loops or radiant floor manifolds to swap out old recirculators.

✅ Handles up to 33 gpm flow plus 33 feet of head pressure
✅ Built-in check valve keeps water moving forward without backflow
✅ Three speed dial lets you tune pacing for summer or winter
✅ Pure copper motor runs quiet under 45 decibels near living rooms
✅ Sealed junction box protects wiring across 35.6 degrees F to 230 degrees F

💡 Best practice for installing a hydronic system booster on old radiators?
Picking a handy replacement moves heated liquid past clogged coils fast.
- Secure flanged pipes with matching gaskets to stop slow leaks overnight
- Run power through the sealed terminal box to protect wet basement wires
- Set the variable drive lower during mild days to cut electric bills
- Drain tank lines before swapping units to keep air bubbles from banging

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