Caleffi

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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
Caleffi Molded Cable for connecting Grundfos VFS & RPS to WMZ-G1 Terminal Block, 10'
Model NA15030 is a Closeout
Closeout
$10.80
Was 
$15.80
SAVE $5.00
Only 2 In-Stock
Model Number NA10313 is the Number 1 Seller

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

21% Buy This
$6.80
Only 2 In-Stock
Model Number 940451 is the Number 2 Seller

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

13% Buy This
$10.49
Factory-Direct
Model Number 200000 is the Number 3 Seller
Caleffi Thermostatic Control Head with Built-in Sensor, 45-82 F Temperature Range, used with radiator valves
10% Buy This
$33.49
In-Stock
Model Number 502243A is the Number 4 Seller
Caleffi Replacement High Capacity Air Vent, 1/2" NPT Male Connections, used with HydroLink Separators
8% Buy This
$18.00
Factory-Direct
Model Number 573002A is the Number 5 Seller
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
$105.00
In-Stock
Caleffi Dual Check Continuous Pressure Backflow Preventer with Atmospheric Vent, 1/2" Sweat Inlet/Outlet
4% Buy This
$43.15
Only 3 In-Stock
Caleffi Series 681 Universal PEX Fitting, 1/2" Nominal PEX Connection, 150 psi max - QTY:1
3% Buy This
$11.10
Factory-Direct
Caleffi Discal Air Separator with 1/2" FNPT Bottom Thread, 1-1/4" Sweat Connections
$143.65
Only 1 In-Stock
Caleffi Series 682 Universal PEX-AL-PEX Fittings, 1/2" PEX-AL-PEX Connections, 150 psi max
3% Buy This
$4.95
In-Stock
Caleffi 3/4" Nominal Universal PEX Fittings, ASTM Pipe Size
2% Buy This
$5.40
In-Stock
Caleffi Wall Covering Plate, used with 301 series dual panel radiator valves
2% Buy This
$2.25
Factory-Direct

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

1% Buy This
$6.75
Only 4 In-Stock
Caleffi 1/2" Nominal Universal PEX Fittings, ASTM Pipe Size
1% Buy This
$5.40
In-Stock
Caleffi Two-pipe Straight Panel Radiators Valve, 1/2" Straight (Radiator) x 3/4" Conical (Pipe)
1% Buy This
$27.00
Only 5 In-Stock
Caleffi DirtMag Dirt Separator with Magnet, 1" NPT Female Connections, top thread on top
1% Buy This
$122.00
Only 4 In-Stock
Caleffi 1/8" MNPT Service Check Valve, no purging system required
1% Buy This
$6.50
Factory-Direct
Caleffi 1/2" Hard Copper Compression Fittings, 1/2" Compression Connections, 150 psi max
1% Buy This
$9.35
Factory-Direct
Caleffi Replacement Shut-off Valve for 663 Series Manifold Assembly
1% Buy This
$6.65
Factory-Direct
Caleffi 3/4" Manifold Outlet Cap, 3/4" Straight Thread
1% Buy This
$5.10
Factory-Direct
Caleffi Z-One 24V Normally Closed Valve Actuator without AUX Switch, 18" Wire
1% Buy This
$48.40
Factory-Direct
Caleffi Straight Isolation & Balancing Valve, 1/2" Straight (Radiator) x 3/4" Conical (Pipe), 2.5 Cv
1% Buy This
$22.30
Only 1 In-Stock
Caleffi Boiler Trim Kit, 1" NPT Connections w/ BackFlow Preventer & 4.4 gal Expansion Tank
1% Buy This
$306.40
Only 1 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 may apply, see our full shipping policy for more details.
Caleffi QuickSetter Balancing Valve with Flow Meter, 3/4" NPT, 2 - 7 GPM
1% Buy This
$109.70
Factory-Direct