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

15% Buy This
$9.65
Only 4 In-Stock
Caleffi Thermostatic Control Head with Built-in Sensor, 45-82 F Temperature Range, used with radiator valves
9% Buy This
$31.25
In-Stock
Caleffi 3/4" Nominal Universal PEX Fittings, ASTM Pipe Size
$4.90
Was 
$9.90
SAVE $5.00
Factory-Direct
Caleffi 1/2" Nominal Universal PEX Fittings, ASTM Pipe Size
$4.95
Was 
$9.95
SAVE $5.00
In-Stock
Caleffi Series 681 Universal PEX Fitting, 1/2" Nominal PEX Connection, 150 psi max - QTY:1
7% Buy This
$11.10
In-Stock
Caleffi AutoFIll Combo Automatic Boiler Fill Valve with Backflow Preventer, Pressure Indicator, 1/2" FNPT Inlet x 1/2" NPT Female Outlet
6% Buy This
$99.60
In-Stock

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

5% Buy This
$6.20
In-Stock
Caleffi DirtMag Dirt Separator with Magnet, 1" NPT Female Connections, top thread on top
4% Buy This
$116.10
Only 4 In-Stock
Caleffi Automatic Air Vent with Service Check Valve, 1/8" NPT Male
$9.25
Only 1 In-Stock

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

3% Buy This
$5.85
In-Stock
Caleffi Two-pipe Straight Panel Radiators Valve, 1/2" Straight (Radiator) x 3/4" Conical (Pipe)
2% Buy This
$23.25
In-Stock
Caleffi Two-pipe Angled Panel Radiators Valve, 1/2" Straight (Radiator) x 3/4" Conical (Pipe)
2% Buy This
$23.25
In-Stock
Caleffi 1/2" Hard Copper Compression Fittings, 1/2" Compression Connections, 150 psi max
$9.35
In-Stock
Caleffi One-pipe Straight Panel Radiators Valve, 1/2" Straight (Radiator) x 3/4" Conical (Pipe)
2% Buy This
$43.95
In-Stock
Caleffi Z-One 24V Normally Closed Valve Actuator without AUX Switch, 18" Wire
$48.40
Factory-Direct
Caleffi Discal Air Separator with 1/2" Check Valve, 1-1/4" NPT Female Connections
$154.40
Only 1 In-Stock
Caleffi Series 682 Universal PEX-AL-PEX Fittings, 1/2" PEX-AL-PEX Connections, 150 psi max
$4.95
In-Stock
Caleffi 5/8" Nominal Universal PEX Fittings, ASTM Pipe Size
$5.10
Factory-Direct
Caleffi Z-One 24V Normally Closed Valve Actuator with AUX Switch, 18" Wire
$52.20
Only 2 In-Stock
Caleffi Straight Isolation & Balancing Valve, 1/2" Straight (Radiator) x 3/4" Conical (Pipe), 2.5 Cv
1% Buy This
$22.30
Factory-Direct
Caleffi Discal Air Separator with 1/2" FNPT Bottom Thread, 1" NPT Female Connections
$103.30
Only 2 In-Stock
Caleffi 2-Way Straight Motorized Ball Zone Valve, 1" Sweat Connections, 13 Cv
$177.50
Factory-Direct
Caleffi Replacement Boiler Drain Valve, 1/4" NPT x 3/4" Garden Hose Thread
$7.85
Was 
$12.85
SAVE $5.00
Factory-Direct
Caleffi DirtMag Dirt Separator with Magnet, 1" Sweat Connections, top thread on top
1% Buy This
$110.55
Only 2 In-Stock