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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 940451 is the Number 1 Seller
Learn More About 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 132432A is the Number 2 Seller
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Caleffi QuickSetter Balancing Valve with Flow Meter, 1/2" NPT, 0.5-1.75 GPM
Model: 132432A
Caleffi QuickSetter Balancing Valve with Flow Meter, 1/2" NPT, 0.5-1.75 GPM
11% Buy This
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$101.85
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Model Number NA10262 is the Number 3 Seller
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Caleffi 1/2" Sweat Connection Fitting, chrome plated nut
Model: NA10262

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

9% 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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$5.85
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Model Number 437516 is the Number 4 Seller
Learn More About 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
9% Buy This
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$9.35
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Model Number 681524 is the Number 5 Seller
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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
9% 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 538402 FD
Caleffi Replacement Boiler Drain Valve, 1/2" NPT x 3/4" Garden Hose Thread
Model: 538402 FD
Caleffi Replacement Boiler Drain Valve, 1/2" NPT x 3/4" Garden Hose Thread
8% Buy This
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$8.00
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Learn More About 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)
6% 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
In-Stock
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Learn More About 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
5% 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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Learn More About 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

5% 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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$6.20
Only 2 In-Stock
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Learn More About 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
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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$23.25
Only 3 In-Stock
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Learn More About 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
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(2)
Q&A (1)
$43.95
Only 1 In-Stock
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Learn More About 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
In-Stock
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Learn More About 132882A
Caleffi QuickSetter Balancing Valve with Flow Meter, 1-1/2" NPT, 8 - 32 GPM
Model: 132882A
Caleffi QuickSetter Balancing Valve with Flow Meter, 1-1/2" NPT, 8 - 32 GPM
2% Buy This
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$201.05
Factory-Direct
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Learn More About Free Freight *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 may apply, see our full shipping policy for more details.
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Learn More About 250041A
Caleffi Solar Systems Automatic Air Vent, 1/2" NPT Connection
Model: 250041A
Caleffi Solar Systems Automatic Air Vent, 1/2" NPT Connection
2% Buy This
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$32.40
Only 2 In-Stock
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Learn More About 573002A
Caleffi Auto Fill Combo Automatic Boiler Fill Valve with Backflow Preventer, 1/2" FNPT Inlet x 1/2" NPT Female 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
1% 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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Learn More About 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 120159A
Caleffi FlowCal Y-Strainer with Integral Ball Valve, 3/4" Sweat Connections
Model: 120159A
Caleffi FlowCal Y-Strainer with Integral Ball Valve, 3/4" Sweat Connections
1% Buy This
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$66.65
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Learn More About 253044
Caleffi Solar Systems Safety Relief Valve, 1/2" FNPT Inlet x 3/4" FNPT Discharge, Factory set to 60 PSI
Model: 253044
Caleffi Solar Systems Safety Relief Valve, 1/2" FNPT Inlet x 3/4" FNPT Discharge, Factory set to 60 PSI
1% Buy This
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$32.25
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Learn More About NA553379
Caleffi Boiler Trim Kit, 1-1/4" Sweat Connections w/BackFlow Preventer & 4.4 gal Expansion Tank
Model: NA553379
Caleffi Boiler Trim Kit, 1-1/4" Sweat Connections w/BackFlow Preventer & 4.4 gal Expansion Tank
1% Buy This
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$347.95
Factory-Direct
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Free Shipping
Learn More About Free Freight *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 may apply, see our full shipping policy for more details.
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Learn More About 342452
Caleffi Angled Isolation & Balancing Valve, 1/2" Straight (Radiator) x 3/4" Conical (Pipe), 4.6 Cv
Model: 342452
Caleffi Angled Isolation & Balancing Valve, 1/2" Straight (Radiator) x 3/4" Conical (Pipe), 4.6 Cv
1% 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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$21.25
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Learn More About 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
1% 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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$116.10
Only 2 In-Stock
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Learn More About 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
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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$161.45
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Learn More About 301341
Caleffi One-pipe Angled Panel Radiators Valve, 1/2" Straight (Radiator) x 3/4" Conical (Pipe)
Model: 301341
Caleffi One-pipe Angled Panel Radiators Valve, 1/2" Straight (Radiator) x 3/4" Conical (Pipe)
1% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(1)
Q&A (1)
$43.95
Only 1 In-Stock
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Learn More About 546097A
Caleffi Air & Dirt Separator, 1-1/4" Integral Sweat Connections
Model: 546097A
Caleffi Air & Dirt Separator, 1-1/4" Integral Sweat Connections
1% Buy This
1.0 out of 51.0 out of 51.0 out of 51.0 out of 51.0 out of 5(1)
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$197.75
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