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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 200000 is the Number 1 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
16% Buy This
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$33.49
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Model Number 940451 is the Number 2 Seller
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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

11% Buy This
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$10.49
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Model Number 680505A is the Number 3 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
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$5.40
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Model Number 682540A is the Number 4 Seller
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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
9% Buy This
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$4.95
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Model Number NA10313 is the Number 5 Seller
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Caleffi Series NA103 - Connection Fitting - 1/2" NPT Male Connection - 3/4" BSP
Model: NA10313

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

7% Buy This
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$6.80
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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

6% Buy This
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$6.75
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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
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$27.00
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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
4% Buy This
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$105.00
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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)
3% Buy This
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$26.00
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Learn More About Caleffi 681524-2
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:2
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$22.20
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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
2% Buy This
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$43.15
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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
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$5.40
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Learn More About Caleffi 437516-2
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
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$9.80
Only 1 In-Stock
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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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$122.00
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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)
1% Buy This
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$43.95
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Learn More About Caleffi 551007AC
Caleffi Discal Air Separator with 1/2" Check Valve, 1-1/4" NPT Female Connections
Model: 551007AC
Caleffi Discal Air Separator with 1/2" Check Valve, 1-1/4" NPT Female Connections
1% Buy This
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$154.40
Only 1 In-Stock
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Learn More About Caleffi 127349AFG50
Caleffi FlowCal Compact Automatic Flow Balancing Valve 1/2" Sweat Connections, Low-Lead Brass
Model: 127349AFG50
Caleffi FlowCal Compact Automatic Flow Balancing Valve, 1/2" Sweat Connections, Low-Lead Brass
1% Buy This
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$50.95
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Learn More About Caleffi 669050
Caleffi Manifolds Flow Meter with Clearview sight-gauge, 1 to 4 LPM
Model: 669050
Caleffi Manifolds Flow Meter with Clearview sight-gauge, 1 to 4 LPM
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$17.60
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Learn More About Caleffi 656414
Caleffi Low Current Draw Thermoelectric Actuator with AUX Micro Switch, 24V, 31.5" Wire Lead, used on Distribution Manifolds
Model: 656414
Caleffi Low Current Draw Thermoelectric Actuator with AUX Micro Switch, 24V, 31.5" Wire Lead, used on Distribution Manifolds
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$53.15
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Learn More About Caleffi 656404
Caleffi Low Current Draw Thermoelectric Actuator, 24V, 31.5" Wire Lead, used on Distribution Manifolds
Model: 656404
Caleffi Low Current Draw Thermoelectric Actuator, 24V, 31.5" Wire Lead, used on Distribution Manifolds
1% Buy This
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$42.45
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Learn More About Caleffi 546335A
Caleffi DirtMag Dirt Separator with Magnet, 1-1/4" Sweat Connections, top thread on top
Model: 546335A
Caleffi DirtMag Dirt Separator with Magnet, 1-1/4" Sweat Connections, top thread on top
1% Buy This
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$161.45
Only 1 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
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$21.35
Only 4 In-Stock
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Learn More About Caleffi 551035A
Caleffi Discal Air Separator with 1/2" FNPT Bottom Thread, 1-1/4" Sweat Connections
Model: 551035A
Caleffi Discal Air Separator with 1/2" FNPT Bottom Thread, 1-1/4" Sweat Connections
1% Buy This
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$143.65
Only 3 In-Stock
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