
Grundfos 95906638 Pump
The Grundfos 95906638, also known as the UPS-43-100SF, is a high-performance 3-speed stainless steel circulator pump engineered for both residential and commercial hydronic applications. This "Super Brute" series pump features a 1/2HP wet-rotor design, where the motor and pump form an integral unit without a shaft seal, ensuring whisper-quiet operation and eliminating the need for mechanical maintenance. Operating at 115V, it delivers a maximum flow rate of 65 GPM and a maximum head of 31 feet, making it a reliable solution for large-scale secondary loops, radiant heating, and domestic hot water recirculation systems where corrosion resistance is paramount.
For the service professional, the UPS43-100SF stainless steel pump offers maximum versatility with its three-speed internal switch, allowing you to fine-tune the performance to match specific system requirements and reduce energy consumption. The stainless steel housing is highly resistant to aggressive water conditions, while the composite impeller ensures long-term durability in high-temperature environments up to 230°F. This unit is designed for in-line flanged mounting (2-bolt flange) and includes a built-in thermal overload motor protection to prevent burnout during heavy-duty operation.
Key Benefits
- 3-Speed Performance Selection: Adjustable settings allow for technical precision in matching system flow and head requirements.
- Corrosion-Resistant Stainless Steel: Essential for potable water systems and open-loop heating applications to ensure longevity and hygiene.
- Canned Rotor Design: Maintenance-free operation with no shaft seals to replace and zero lubrication required throughout the part's lifespan.
- High Temperature Handling: Operates efficiently with fluid temperatures ranging from 36°F to 230°F.
- Quiet Operation: Ideal for indoor installations where minimizing acoustic noise is a priority for the end-user.
Common Questions
Is the Grundfos 95906638 suitable for potable water?
Yes, the stainless steel circulator pump construction makes it compliant and ideal for domestic hot water and potable water recirculation systems.
What is the flange size for the UPS43-100SF?
This pump uses a standard 2-bolt flange connection. It is frequently paired with 1-1/2" flange sets, though it is compatible with various GF 40/43 flange sizes depending on your piping requirements.
Does this pump require a separate motor starter?
No, the 115V single-phase motor features built-in thermal protection, so no additional external motor protection is necessary for standard operation.
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.
Original: $948.30
-65%$948.30
$331.90Grundfos 95906638 Pump
The Grundfos 95906638, also known as the UPS-43-100SF, is a high-performance 3-speed stainless steel circulator pump engineered for both residential and commercial hydronic applications. This "Super Brute" series pump features a 1/2HP wet-rotor design, where the motor and pump form an integral unit without a shaft seal, ensuring whisper-quiet operation and eliminating the need for mechanical maintenance. Operating at 115V, it delivers a maximum flow rate of 65 GPM and a maximum head of 31 feet, making it a reliable solution for large-scale secondary loops, radiant heating, and domestic hot water recirculation systems where corrosion resistance is paramount.
For the service professional, the UPS43-100SF stainless steel pump offers maximum versatility with its three-speed internal switch, allowing you to fine-tune the performance to match specific system requirements and reduce energy consumption. The stainless steel housing is highly resistant to aggressive water conditions, while the composite impeller ensures long-term durability in high-temperature environments up to 230°F. This unit is designed for in-line flanged mounting (2-bolt flange) and includes a built-in thermal overload motor protection to prevent burnout during heavy-duty operation.
Key Benefits
- 3-Speed Performance Selection: Adjustable settings allow for technical precision in matching system flow and head requirements.
- Corrosion-Resistant Stainless Steel: Essential for potable water systems and open-loop heating applications to ensure longevity and hygiene.
- Canned Rotor Design: Maintenance-free operation with no shaft seals to replace and zero lubrication required throughout the part's lifespan.
- High Temperature Handling: Operates efficiently with fluid temperatures ranging from 36°F to 230°F.
- Quiet Operation: Ideal for indoor installations where minimizing acoustic noise is a priority for the end-user.
Common Questions
Is the Grundfos 95906638 suitable for potable water?
Yes, the stainless steel circulator pump construction makes it compliant and ideal for domestic hot water and potable water recirculation systems.
What is the flange size for the UPS43-100SF?
This pump uses a standard 2-bolt flange connection. It is frequently paired with 1-1/2" flange sets, though it is compatible with various GF 40/43 flange sizes depending on your piping requirements.
Does this pump require a separate motor starter?
No, the 115V single-phase motor features built-in thermal protection, so no additional external motor protection is necessary for standard operation.
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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Product Information
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Description
The Grundfos 95906638, also known as the UPS-43-100SF, is a high-performance 3-speed stainless steel circulator pump engineered for both residential and commercial hydronic applications. This "Super Brute" series pump features a 1/2HP wet-rotor design, where the motor and pump form an integral unit without a shaft seal, ensuring whisper-quiet operation and eliminating the need for mechanical maintenance. Operating at 115V, it delivers a maximum flow rate of 65 GPM and a maximum head of 31 feet, making it a reliable solution for large-scale secondary loops, radiant heating, and domestic hot water recirculation systems where corrosion resistance is paramount.
For the service professional, the UPS43-100SF stainless steel pump offers maximum versatility with its three-speed internal switch, allowing you to fine-tune the performance to match specific system requirements and reduce energy consumption. The stainless steel housing is highly resistant to aggressive water conditions, while the composite impeller ensures long-term durability in high-temperature environments up to 230°F. This unit is designed for in-line flanged mounting (2-bolt flange) and includes a built-in thermal overload motor protection to prevent burnout during heavy-duty operation.
Key Benefits
- 3-Speed Performance Selection: Adjustable settings allow for technical precision in matching system flow and head requirements.
- Corrosion-Resistant Stainless Steel: Essential for potable water systems and open-loop heating applications to ensure longevity and hygiene.
- Canned Rotor Design: Maintenance-free operation with no shaft seals to replace and zero lubrication required throughout the part's lifespan.
- High Temperature Handling: Operates efficiently with fluid temperatures ranging from 36°F to 230°F.
- Quiet Operation: Ideal for indoor installations where minimizing acoustic noise is a priority for the end-user.
Common Questions
Is the Grundfos 95906638 suitable for potable water?
Yes, the stainless steel circulator pump construction makes it compliant and ideal for domestic hot water and potable water recirculation systems.
What is the flange size for the UPS43-100SF?
This pump uses a standard 2-bolt flange connection. It is frequently paired with 1-1/2" flange sets, though it is compatible with various GF 40/43 flange sizes depending on your piping requirements.
Does this pump require a separate motor starter?
No, the 115V single-phase motor features built-in thermal protection, so no additional external motor protection is necessary for standard operation.
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.












