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Keep your hydronic system running smoothly with Grundfos pumps and valves. Grundfos boiler pumps, valves, and accessories will give your heating system the quality it needs to perform at top efficiency and comfort levels.
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Circulator Pump Accessories
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Learn More About 59896155
Grundfos
Grundfos UP - 1/25 HP - Single-Speed Circulation Pump - Cast Iron - GF 15/26 Flange
Model: 59896155
Grundfos - UP15-42F - 1/25 Horsepower - Single-Speed Circulation Pump - Cast Iron - GF 15/26 Flange - Hardwire - 115V/1 Phase - MPN: 59896155
12% Buy This
4.8 out of 54.8 out of 54.8 out of 54.8 out of 54.8 out of 5(16)
Q&As (2)
$87.00
In-Stock
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Learn More About 59896341
Grundfos
Grundfos UPS - 1/25 HP - 3-Speed Circulation Pump - Cast Iron - GF 15/26 Flange - Check Valve
Model: 59896341
Grundfos - UPS15-58FC - 1/25 Horsepower - 3-Speed Circulation Pump - Cast Iron - GF 15/26 Flange - Hardwire - 115V/1 Phase - Integral Check Valve - MPN: 59896341
11% Buy This
4.9 out of 54.9 out of 54.9 out of 54.9 out of 54.9 out of 5(9)
Q&As (2)
$88.00
In-Stock
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Learn More About 59896114
Grundfos
Grundfos UP - 1/25 HP - Single-Speed Circulation Pump - Bronze - 1/2" Sweat
Model: 59896114
Grundfos - UP15-18B5 - 1/25 Horsepower - Single-Speed Circulation Pump - Bronze - 1/2" Sweat - Hardwire - 115V/1 Phase - MPN: 59896114
7% Buy This
4.8 out of 54.8 out of 54.8 out of 54.8 out of 54.8 out of 5(12)
Q&As (2)
$185.00
In-Stock
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Learn More About 519601
Grundfos
Grundfos GF 15/26 Flange - Pump Connection Adapter - 3/4" NPT - Cast Iron - Qty: 2
Model: 519601
Grundfos - 519601 - GF 15/26 Flange - Pump Connection Adapter - 3/4" NPT - Quantity 2 - For GF 15/26 Pumps
5% Buy This
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$13.00
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Learn More About 99287256
Grundfos
Grundfos ALPHA1 - 1/16 HP - Variable-Speed Circulation Pump - Cast Iron - GF 15/26 Flange - With Terminal Box
Model: 99287256
120V/1 Phase - Integral Check Valve
5% Buy This
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$135.00
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Learn More About 52722330
Grundfos
Grundfos UP - 1/12 HP - 1-Speed Circulation Pump - Cast Iron - GF 15/26 Flange
Model: 52722330
Grundfos - UP26-64F - 1/12 Horsepower - 1-Speed Circulation Pump - Cast Iron - GF 15/26 Flange - Hardwire - 115V/1 Phase - MPN: 52722330
4% Buy This
4.8 out of 54.8 out of 54.8 out of 54.8 out of 54.8 out of 5(6)
Q&As (2)
$250.00
In-Stock
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? *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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Learn More About 519602
Grundfos
Grundfos GF 15/26 Flange - Pump Connection Adapter - 1" NPT - Cast Iron - Qty: 2
Model: 519602
Grundfos - 519602 - GF 15/26 Flange - Pump Connection Adapter - 1" NPT - Quantity 2 - For GF 15/26 Pumps
4% Buy This
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$8.00
In-Stock
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? *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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Learn More About 510179
Grundfos
Grundfos GF 15/26 Flange - Replacement Flange Gasket
Model: 510179
Grundfos - 510179 - GF 15/26 Flange - Replacement Flange Gasket
4% Buy This
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$5.00
In-Stock
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? *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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Learn More About 52722355
Grundfos
Grundfos UP - 1/6 HP - Single-Speed Circulation Pump - Cast Iron - GF 15/26 Flange
Model: 52722355
Grundfos - UP26-99F - 1/6 Horsepower - Single-Speed Circulation Pump - Cast Iron - GF 15/26 Flange - Hardwire - 115V/1 Phase - MPN: 52722355
3% Buy This
4.9 out of 54.9 out of 54.9 out of 54.9 out of 54.9 out of 5(7)
Q&As (2)
$275.00
In-Stock
Free Shipping
? *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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Learn More About 96806135
Grundfos
Grundfos GF 15/26 Flange - Dielectric Isolation Valve Set - Bronze - 3/4" Sweat
Model: 96806135
Grundfos - 96806135 - GF 15/26 Flange - Dielectric Isolation Valve Set - Bronze - 3/4" Sweat
3% Buy This
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$35.00
In-Stock
Free Shipping
? *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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Learn More About 59896771
Grundfos
Grundfos UP - 1/12 HP - Single-Speed Circulation Pump - Stainless Steel - GF 15/26 Flange
Model: 59896771
Grundfos - UP15-29SF - 1/12 Horsepower - Single-Speed Circulation Pump - Stainless Steel - GF 15/26 Flange - Hardwire - 115V/1 Phase - MPN: 59896771
2% Buy This
4.9 out of 54.9 out of 54.9 out of 54.9 out of 54.9 out of 5(12)
Q&As (3)
$210.00
In-Stock
Free Shipping
? *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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Learn More About 52722512
Grundfos
Grundfos UPS - 1/6 HP - 3-Speed Circulation Pump - Cast Iron - GF 15/26 Flange - Check Valve
Model: 52722512
Grundfos - UPS26-99FC - 1/6 Horsepower - 3-Speed Circulation Pump - Cast Iron - GF 15/26 Flange - Hardwire - 115V/1 Phase - Integral Check Valve - MPN: 52722512
2% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(5)
Q&A (1)
$294.00
In-Stock
Free Shipping
? *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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Learn More About 59896773
Grundfos
Grundfos UPS - 1/12 HP - 3-Speed Circulation Pump - Stainless Steel - GF 15/26 Flange - Check Valve
Model: 59896773
Grundfos - UPS15-55SFC - 1/12 Horsepower - 3-Speed Circulation Pump - Stainless Steel - GF 15/26 Flange - Hardwire - 115V/1 Phase - Integral Check Valve - MPN: 59896773
2% Buy This
4.9 out of 54.9 out of 54.9 out of 54.9 out of 54.9 out of 5(7)
Q&A (1)
$315.00
In-Stock
Free Shipping
? *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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Learn More About 96806130
Grundfos
Grundfos GF 15/26 Flange - Dielectric Isolation Valve Set - Bronze - 3/4" NPT
Model: 96806130
Grundfos - 96806130 - GF 15/26 Flange - Dielectric Isolation Valve Set - Bronze - 3/4" NPT
2% Buy This
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$32.00
In-Stock
Free Shipping
? *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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Learn More About 99285998
Grundfos
Grundfos ALPHA1 - 1/16 HP - Variable-Speed Circulation Pump - Cast Iron - GF 15/26 Flange - With Line Cord
Model: 99285998
120V/1 Phase - Integral Check Valve
2% Buy This
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$135.00
In-Stock
Free Shipping
? *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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Learn More About 99287250
Grundfos
Grundfos ALPHA1 - 1/16 HP - Variable-Speed Circulation Pump - Stainless Steel - GF 15/26 Flange - With Line Cord
Model: 99287250
120V/1 Phase - Integral Check Valve
2% Buy This
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$259.00
Factory-Direct
Free Shipping
? *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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Learn More About 59896212
Grundfos
Grundfos UP - 1/25 HP - Single-Speed Circulation Pump - Bronze - 1/2" Sweat
Model: 59896212
Grundfos - UP15-18B5/TLC - 1/25 Horsepower - Single-Speed Circulation Pump - Bronze - 1/2" Sweat - Line Cord - 115V/1 Phase - MPN: 59896212
2% Buy This
4.6 out of 54.6 out of 54.6 out of 54.6 out of 54.6 out of 5(14)
Q&As (2)
$259.00
Only 2 In-Stock
Free Shipping
? *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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Learn More About 59896121
Grundfos
Grundfos UP - 1/25 HP - Single-Speed Circulation Pump - Bronze - 3/4" Sweat
Model: 59896121
Grundfos - UP15-18B7 - 1/25 Horsepower - Single-Speed Circulation Pump - Bronze - 3/4" Sweat - Hardwire - 115V/1 Phase - MPN: 59896121
2% Buy This
4.9 out of 54.9 out of 54.9 out of 54.9 out of 54.9 out of 5(10)
Q&As (2)
$196.00
In-Stock
Free Shipping
? *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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Learn More About 96806136
Grundfos
Grundfos GF 15/26 Flange - Dielectric Isolation Valve Set - Bronze - 1" Sweat
Model: 96806136
Grundfos - 96806136 - GF 15/26 Flange - Dielectric Isolation Valve Set - Bronze - 1" Sweat
2% Buy This
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$40.00
In-Stock
Free Shipping
? *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
Add To Cart
Learn More About 52722341
Grundfos
Grundfos UP - 1/12 HP - Single-Speed Circulation Pump - Cast Iron - GF 15/26 Flange
Model: 52722341
Grundfos - UP26-96F - 1/12 Horsepower - Single-Speed Circulation Pump - Cast Iron - GF 15/26 Flange - Hardwire - 115V/1 Phase - MPN: 52722341
1% Buy This
4.8 out of 54.8 out of 54.8 out of 54.8 out of 54.8 out of 5(6)
Q&As (2)
$276.00
In-Stock
Free Shipping
? *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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Learn More About 59896804
Grundfos
Grundfos MixiMizer - 1/25 HP - Variable-Speed Circulation Pump - Cast Iron - GF 15/26 Flange - Check Valve
Model: 59896804
Grundfos - UP15-42FC/MR - 1/25 Horsepower - Variable-Speed Circulation Pump - Cast Iron - GF 15/26 Flange - Hardwire - 115V/1 Phase - Integral Check Valve - MPN: 59896804
1% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(2)
Ask a Question
$378.00
Factory-Direct
Free Shipping
? *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
Add To Cart
Learn More About 52722351
Grundfos
Grundfos UP - 1/6 HP - Single-Speed Circulation Pump - Cast Iron - GF 15/26 Flange
Model: 52722351
Grundfos - UP26-99F - 1/6 Horsepower - Single-Speed Circulation Pump - Cast Iron - GF 15/26 Flange - Hardwire - 230V/1 Phase - MPN: 52722351
1% Buy This
4.8 out of 54.8 out of 54.8 out of 54.8 out of 54.8 out of 5(6)
Q&As (2)
$284.00
In-Stock
Free Shipping
? *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
Add To Cart
Learn More About 519651
Grundfos
Grundfos GF 15/26 Flange - Pump Connection Adapter - 3/4" NPT - Bronze - Qty: 2
Model: 519651
Grundfos - 519651 - GF 15/26 Flange - Pump Connection Adapter - 3/4" NPT - Quantity 2 - For GF 15/26 Pumps
1% Buy This
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$35.20
In-Stock
Free Shipping
? *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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Learn More About 529913
Grundfos
Grundfos GU 125 Union - Pump Connection Adapter - 1/2" Union Sweat - Bronze - Qty: 2
Model: 529913
Grundfos - 529913 - GU 125 Union - Pump Connection Adapter - 1/2" NPT - Quantity 2 - For GU 125 Pumps
1% Buy This
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$32.00
In-Stock
Free Shipping
? *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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