
Grundfos 95906637 Pump
The Grundfos 95906637, also known as the UPS43-100F Super Brute, is a high-performance 3-speed circulator pump engineered for demanding hydronic heating and cooling applications. As a veteran-grade cast iron pump, this unit features a robust 1/3 HP wet-rotor motor designed for 230V operations, making it a staple for commercial and large-scale residential closed-loop systems. The integrated 3-speed switch allows technicians to precisely match the pump's curve to the system's head requirements, significantly reducing flow noise and energy consumption. This flanged circulator utilizes a standard 2-bolt flange connection (GF 40/43), ensuring seamless integration into existing HVAC piping. With a maximum head of 31 feet and a peak flow rate of 65 GPM, it provides the versatility needed for diverse terminal units, from radiant manifolds to air handlers. Its canned-rotor design eliminates the need for mechanical seals, providing whisper-quiet, maintenance-free performance even in continuous-duty cycles. For professional installers, the UPS43-100F is the reliable choice for minimizing callbacks and optimizing system pressure.
Key Benefits- Selectable Performance: Integrated 3-speed motor allows for field-adjustable flow to meet specific system resistance, eliminating the need to stock multiple pump sizes.
- Heavy-Duty Construction: The cast iron housing and composite impeller are built to withstand high-temperature hydronic fluid up to 230°F.
- Quiet Operation: Ceramic bearings and wet-rotor technology ensure extremely low decibel levels, ideal for placement near occupied spaces.
- Technical Versatility: Suitable for both high-flow and high-head applications within closed-loop heating or chilled water systems.
- Streamlined Installation: Compact 8-9/16" port-to-port length and industry-standard flanging allow for rapid drop-in replacement of older circulators.
What is the maximum operating pressure for this pump?
The Grundfos 95906637 is rated for a maximum operating pressure of 145 PSI, making it suitable for high-rise residential or commercial boiler loops.
Can this pump be used in open-loop potable water systems?
No, since this is a cast iron pump, it is strictly intended for closed-loop systems where oxygen is not present to prevent corrosion. For domestic water recirculation, a stainless steel or bronze model is required.
What flange size is required for installation?
This model requires a 1-1/2" cast iron flange set compatible with the GF 40/43 2-bolt mount. Always ensure you have a fresh set of gaskets for a leak-free seal during the swap.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Grundfos 95906637 Pump
The Grundfos 95906637, also known as the UPS43-100F Super Brute, is a high-performance 3-speed circulator pump engineered for demanding hydronic heating and cooling applications. As a veteran-grade cast iron pump, this unit features a robust 1/3 HP wet-rotor motor designed for 230V operations, making it a staple for commercial and large-scale residential closed-loop systems. The integrated 3-speed switch allows technicians to precisely match the pump's curve to the system's head requirements, significantly reducing flow noise and energy consumption. This flanged circulator utilizes a standard 2-bolt flange connection (GF 40/43), ensuring seamless integration into existing HVAC piping. With a maximum head of 31 feet and a peak flow rate of 65 GPM, it provides the versatility needed for diverse terminal units, from radiant manifolds to air handlers. Its canned-rotor design eliminates the need for mechanical seals, providing whisper-quiet, maintenance-free performance even in continuous-duty cycles. For professional installers, the UPS43-100F is the reliable choice for minimizing callbacks and optimizing system pressure.
Key Benefits- Selectable Performance: Integrated 3-speed motor allows for field-adjustable flow to meet specific system resistance, eliminating the need to stock multiple pump sizes.
- Heavy-Duty Construction: The cast iron housing and composite impeller are built to withstand high-temperature hydronic fluid up to 230°F.
- Quiet Operation: Ceramic bearings and wet-rotor technology ensure extremely low decibel levels, ideal for placement near occupied spaces.
- Technical Versatility: Suitable for both high-flow and high-head applications within closed-loop heating or chilled water systems.
- Streamlined Installation: Compact 8-9/16" port-to-port length and industry-standard flanging allow for rapid drop-in replacement of older circulators.
What is the maximum operating pressure for this pump?
The Grundfos 95906637 is rated for a maximum operating pressure of 145 PSI, making it suitable for high-rise residential or commercial boiler loops.
Can this pump be used in open-loop potable water systems?
No, since this is a cast iron pump, it is strictly intended for closed-loop systems where oxygen is not present to prevent corrosion. For domestic water recirculation, a stainless steel or bronze model is required.
What flange size is required for installation?
This model requires a 1-1/2" cast iron flange set compatible with the GF 40/43 2-bolt mount. Always ensure you have a fresh set of gaskets for a leak-free seal during the swap.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
The Grundfos 95906637, also known as the UPS43-100F Super Brute, is a high-performance 3-speed circulator pump engineered for demanding hydronic heating and cooling applications. As a veteran-grade cast iron pump, this unit features a robust 1/3 HP wet-rotor motor designed for 230V operations, making it a staple for commercial and large-scale residential closed-loop systems. The integrated 3-speed switch allows technicians to precisely match the pump's curve to the system's head requirements, significantly reducing flow noise and energy consumption. This flanged circulator utilizes a standard 2-bolt flange connection (GF 40/43), ensuring seamless integration into existing HVAC piping. With a maximum head of 31 feet and a peak flow rate of 65 GPM, it provides the versatility needed for diverse terminal units, from radiant manifolds to air handlers. Its canned-rotor design eliminates the need for mechanical seals, providing whisper-quiet, maintenance-free performance even in continuous-duty cycles. For professional installers, the UPS43-100F is the reliable choice for minimizing callbacks and optimizing system pressure.
Key Benefits- Selectable Performance: Integrated 3-speed motor allows for field-adjustable flow to meet specific system resistance, eliminating the need to stock multiple pump sizes.
- Heavy-Duty Construction: The cast iron housing and composite impeller are built to withstand high-temperature hydronic fluid up to 230°F.
- Quiet Operation: Ceramic bearings and wet-rotor technology ensure extremely low decibel levels, ideal for placement near occupied spaces.
- Technical Versatility: Suitable for both high-flow and high-head applications within closed-loop heating or chilled water systems.
- Streamlined Installation: Compact 8-9/16" port-to-port length and industry-standard flanging allow for rapid drop-in replacement of older circulators.
What is the maximum operating pressure for this pump?
The Grundfos 95906637 is rated for a maximum operating pressure of 145 PSI, making it suitable for high-rise residential or commercial boiler loops.
Can this pump be used in open-loop potable water systems?
No, since this is a cast iron pump, it is strictly intended for closed-loop systems where oxygen is not present to prevent corrosion. For domestic water recirculation, a stainless steel or bronze model is required.
What flange size is required for installation?
This model requires a 1-1/2" cast iron flange set compatible with the GF 40/43 2-bolt mount. Always ensure you have a fresh set of gaskets for a leak-free seal during the swap.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.












