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One of the biggest names in hydronics, Caleffi has all the parts to optimize your boiler's performance. We carry a full line of Caleffi heating products, so start shopping below or call us for expert advice!
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Model Number NA15030 is a Hot Seller
Learn More About Caleffi NA15030
Caleffi Molded Cable for connecting Grundfos VFS & RPS to WMZ-G1 Terminal Block, 10'
Model: NA15030
Caleffi Molded Cable for connecting Grundfos VFS & RPS to WMZ-G1 Terminal Block, 10'
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Model NA15030 is a Closeout
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$10.80
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$15.80
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Model Number 940451 is the Number 1 Seller
Learn More About Caleffi 940451
Caleffi Series 940 - Radiator Adapter - 1/2" x 3/4" Connections - QTY: 2
Model: 940451

Caleffi - Series 940 - Radiator Adapter - 1/2" M Straight x 3/4" M Conical Connection, Package of 2

12% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(3)
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$9.65
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Model Number 680505A is the Number 2 Seller
Learn More About Caleffi 680505A
Caleffi 3/4" Nominal Universal PEX Fittings, ASTM Pipe Size
Model: 680505A
Caleffi 3/4" Nominal Universal PEX Fittings, ASTM Pipe Size
11% Buy This
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$4.90
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$9.90
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Model Number 200000 is the Number 3 Seller
Learn More About Caleffi 200000
Caleffi Thermostatic Control Head with Built-in Sensor, 45-82 F Temperature Range, used with radiator valves
Model: 200000
Caleffi Thermostatic Control Head with Built-in Sensor, 45-82 F Temperature Range, used with radiator valves
8% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(2)
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$31.25
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Model Number 573002A is the Number 4 Seller
Learn More About Caleffi 573002A
Caleffi Auto Fill Combo Automatic Boiler Fill Valve with Backflow Preventer, 1/2" FNPT Inlet x 1/2" FNPT Outlet
Model: 573002A
Caleffi AutoFIll Combo Automatic Boiler Fill Valve with Backflow Preventer, Pressure Indicator, 1/2" FNPT Inlet x 1/2" NPT Female Outlet
7% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(1)
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$99.60
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Model Number 681524 is the Number 5 Seller
Learn More About Caleffi 681524
Caleffi Series 681 Universal PEX Fitting, 1/2" Nominal PEX Connection, 150 psi max - QTY:2
Model: 681524
Caleffi Series 681 Universal PEX Fitting, 1/2" Nominal PEX Connection, 150 psi max - QTY:1
7% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(1)
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$11.10
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Learn More About Caleffi 680504A
Caleffi 1/2" Nominal Universal PEX Fittings, ASTM Pipe Size
Model: 680504A
Caleffi 1/2" Nominal Universal PEX Fittings, ASTM Pipe Size
5% Buy This
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$4.95
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$9.95
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Learn More About Caleffi NA10262
Caleffi 1/2" Sweat Connection Fitting, chrome plated nut
Model: NA10262

Caleffi 1/2" Sweat Connection Fitting, chrome plated nut

4% Buy This
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$5.85
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Learn More About Caleffi 301040
Caleffi Two-pipe Straight Panel Radiators Valve, 1/2" Straight (Radiator) x 3/4" Conical (Pipe)
Model: 301040
Caleffi Two-pipe Straight Panel Radiators Valve, 1/2" Straight (Radiator) x 3/4" Conical (Pipe)
4% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(2)
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$23.25
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Learn More About Caleffi NA10313
Caleffi Series NA103 - Connection Fitting - 1/2" NPT Male Connection
Model: NA10313

Caleffi - Series NA103 - Connection Fitting - 1/2" NPT Male Connection - 150 PSI Maximum Pressure

3% Buy This
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$6.20
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Learn More About Caleffi 546306A
Caleffi DirtMag Dirt Separator with Magnet, 1" NPT Female Connections, top thread on top
Model: 546306A
Caleffi DirtMag Dirt Separator with Magnet, 1" NPT Female Connections, top thread on top
2% Buy This
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$116.10
Only 1 In-Stock
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Learn More About Caleffi 301241
Caleffi One-pipe Straight Panel Radiators Valve, 1/2" Straight (Radiator) x 3/4" Conical (Pipe)
Model: 301241
Caleffi One-pipe Straight Panel Radiators Valve, 1/2" Straight (Radiator) x 3/4" Conical (Pipe)
2% Buy This
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$43.95
Factory-Direct
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Learn More About Caleffi 682540A
Caleffi Series 682 Universal PEX-AL-PEX Fittings, 1/2" PEX-AL-PEX Connections, 150 psi max
Model: 682540A
Caleffi Series 682 Universal PEX-AL-PEX Fittings, 1/2" PEX-AL-PEX Connections, 150 psi max
2% Buy This
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$4.95
Only 4 In-Stock
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Learn More About Caleffi R50057
Caleffi 1-1/2" Union Washer for models 523060A, 68A, 70A, 78A
Model: R50057
Caleffi 1-1/2" Union Washer for models 523060A, 68A, 70A, 78A
2% Buy This
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$1.85
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Learn More About Caleffi 343452
Caleffi Straight Isolation & Balancing Valve, 1/2" Straight (Radiator) x 3/4" Conical (Pipe), 2.5 Cv
Model: 343452
Caleffi Straight Isolation & Balancing Valve, 1/2" Straight (Radiator) x 3/4" Conical (Pipe), 2.5 Cv
2% Buy This
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$22.30
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Learn More About Caleffi 437516
Caleffi 1/2" Hard Copper Compression Fittings, 1/2" Compression Connections, 150 psi max QTY: 2
Model: 437516
Caleffi 1/2" Hard Copper Compression Fittings, 1/2" Compression Connections, 150 psi max
2% Buy This
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$9.35
Only 3 In-Stock
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Learn More About Caleffi Z200432
Caleffi Z-One 2-Way Straight Sweat Valve Body, 1/2" Connections, 50 PSI, 2.5 Cv
Model: Z200432
Caleffi Z-One 2-Way Straight Sweat Valve Body, 1/2" Connections, 50 PSI, 2.5 Cv
2% Buy This
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$21.35
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Learn More About Caleffi NA12153
Caleffi NA12153 3/4" Sweat Union
Model: NA12153
Caleffi NA12153 3/4" Sweat Union
2% Buy This
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$20.85
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Learn More About Caleffi Z126000
Caleffi Z-One 120V Normally Closed Valve Actuator without AUX Switch, 6" Wire
Model: Z126000
Caleffi Z-One 120V Normally Closed Valve Actuator without AUX Switch, 6" Wire
1% Buy This
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$48.40
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Learn More About Caleffi 644269A
Caleffi 2-Way Straight Motorized Ball Zone Valve, 1" Sweat Connections, 13 Cv
Model: 644269A
Caleffi 2-Way Straight Motorized Ball Zone Valve, 1" Sweat Connections, 13 Cv
1% Buy This
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$177.50
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Learn More About Caleffi 546328A
Caleffi DirtMag Dirt Separator with Magnet, 1" Sweat Connections, top thread on top
Model: 546328A
Caleffi DirtMag Dirt Separator with Magnet, 1" Sweat Connections, top thread on top
1% Buy This
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$110.55
Only 1 In-Stock
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Learn More About Caleffi 301140
Caleffi Two-pipe Angled Panel Radiators Valve, 1/2" Straight (Radiator) x 3/4" Conical (Pipe)
Model: 301140
Caleffi Two-pipe Angled Panel Radiators Valve, 1/2" Straight (Radiator) x 3/4" Conical (Pipe)
1% Buy This
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$23.25
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Learn More About Caleffi 573409A
Caleffi Dual Check Continuous Pressure Backflow Preventer with Atmospheric Vent, 1/2" Sweat Inlet/Outlet
Model: 573409A
Caleffi Dual Check Continuous Pressure Backflow Preventer with Atmospheric Vent, 1/2" Sweat Inlet/Outlet
1% Buy This
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$43.15
Only 1 In-Stock
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Learn More About Caleffi 386500
Caleffi 3/4" Manifold Outlet Cap, 3/4" Straight Thread
Model: 386500
Caleffi 3/4" Manifold Outlet Cap, 3/4" Straight Thread
1% Buy This
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$5.10
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