Grundfos UP43-75F - UP Series Flanged In-Line Cast Iron Booster Pump

This item is obsolete. It is shown for reference purposes only. A compatible replacement is shown in the Alternate Items tab below.
Grundfos UP Series pumps are wet-rotor circulating pumps intended to pump water through closed loop systems for heating. UP Series pumps feature a canned rotor design, meaning the pump and rotor form an integral unit without a shaft seal. This "built-in" motor provides a longer life and better performance, as well as, quiet operation. The pump's bearings are lubricated from the liquid being pumped through the unit, eliminating the need for frequent lubrication. The UP Series impeller is made out of corrosive-resistant, non-metallic material. The UP43-75F has the capacity to pump up to 46 GPM at a maximum of 26 feet of head. Flange gaskets are included, and flanges are available separately in 3/4", 1", 1-1/4", and 1-1/2".
More Information
Grundfos SeriesUP Series
Pump ConstructionCast Iron-CI
Pump ClassBooster
Pump MountingIn-Line
Pump Connection Size3/4", 1", 1-1/4", 1-1/2"
Pump ConnectionFlanged
Flanges IncludedNo
Motor HP1/6 HP
Motor RPM3450 RPM
Motor Voltage115V
Motor Phase1 Ph
Motor Hertz60 Hz
Max Temp230°F
Potable WaterNo
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Shipping & Returns
Shipping OptionsTime in Transit
Ground4-5 Business Days
3 Day3 Business Days
2 Day2 Business Days
1 Day1 Business Day

In-stock orders which qualify as small package shipping (typically weigh under 70 lbs. per shipment) ship the same day that the order is placed.

* Orders must be received before 3:00 PM Central Time

Purchased WithinRestock Fee
30 DaysNone
After 30 DaysDetermined Case by Case

Items returned within 30 days will not incur a restock fee if they are in saleable condition (original packaging and contents in excellent shape). Previously used/installed items cannot be returned, unless covered by warranty. All returns must be issued an RMA number.

Grundfos Parts
Grundfos Pumps is a world wide supplier of pump technology. Their large, wet rotor circulators have a proven track record of more than 25 years on the market. Grundfos offers a full line of maintenance-free circulators for moving hot water from the boiler to heating devices. Energy-efficient options feature a permanent magnet motor capable of saving up to 80 percent of energy consumption when compared with conventional circulators.
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