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Caleffi Series 681 Universal PEX Fitting, 1/2" Nominal PEX Connection, 150 psi max - QTY:1
29% Buy This
$15.00
In-Stock

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

26% Buy This
$29.00
In-Stock
Caleffi Thermostatic Control Head with Built-in Sensor, 45-82 F Temperature Range, used with radiator valves
13% Buy This
$91.00
In-Stock

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

6% Buy This
$18.00
Factory-Direct
Caleffi 3/4" Nominal Universal PEX Fittings, ASTM Pipe Size
5% Buy This
$15.00
In-Stock
Learn More About Caleffi 301040
Caleffi Two-pipe Straight Panel Radiators Valve, 1/2" Straight (Radiator) x 3/4" Conical (Pipe)
4% Buy This
$75.00
In-Stock
Learn More About Caleffi 301140
Caleffi Two-pipe Angled Panel Radiators Valve, 1/2" Straight (Radiator) x 3/4" Conical (Pipe)
4% Buy This
$75.00
Factory-Direct
Learn More About Caleffi 682540A
Caleffi Series 682 Universal PEX-AL-PEX Fittings, 1/2" PEX-AL-PEX Connections, 150 psi max
4% Buy This
$15.00
In-Stock
Learn More About Caleffi NA10262

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

3% Buy This
$17.16
In-Stock
Learn More About Caleffi 573002A
Caleffi AutoFIll Combo Automatic Boiler Fill Valve with Backflow Preventer, Pressure Indicator, 1/2" FNPT Inlet x 1/2" NPT Female Outlet
3% Buy This
$306.00
In-Stock
Free Shipping
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Free Shipping
*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.
Learn More About Caleffi 301341
Caleffi One-pipe Angled Panel Radiators Valve, 1/2" Straight (Radiator) x 3/4" Conical (Pipe)
1% Buy This
$66.00
In-Stock
Learn More About Caleffi 301241
Caleffi One-pipe Straight Panel Radiators Valve, 1/2" Straight (Radiator) x 3/4" Conical (Pipe)
1% Buy This
$132.00
In-Stock
Learn More About Caleffi 338452
Caleffi Angled Radiator Valve Body, 1/2" Straight (Radiator) x 3/4" Conical (Pipe), 3.1 Cv
1% Buy This
$146.00
In-Stock
Learn More About Caleffi 573009A
Caleffi AutoFIll Combo Automatic Boiler Fill Valve with Backflow Preventer, Pressure Indicator, 1/2" Sweat Inlet x 1/2" FNPT Outlet
1% Buy This
$293.00
Factory-Direct
Free Shipping
Learn More About Free Freight
Free Shipping
*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.
Learn More About Caleffi 551006A
Caleffi Discal Air Separator with 1/2" FNPT Bottom Thread, 1" NPT Female Connections
1% Buy This
$269.00
Factory-Direct
Free Shipping
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Free Shipping
*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.
Learn More About Caleffi 551008AC
Caleffi Discal Air Separator with 1/2" Check Valve, 1-1/2" NPT Female Connections
1% Buy This
$507.00
Factory-Direct
Free Shipping
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Free Shipping
*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.
Learn More About Caleffi 342452
Caleffi Angled Isolation & Balancing Valve, 1/2" Straight (Radiator) x 3/4" Conical (Pipe), 4.6 Cv
$146.00
In-Stock
Learn More About Caleffi 343452
Caleffi Straight Isolation & Balancing Valve, 1/2" Straight (Radiator) x 3/4" Conical (Pipe), 2.5 Cv
$146.00
In-Stock
Learn More About Caleffi 472000
Caleffi Thermostatic Control Head with Remote Wall Sensor, 43-82 F Temperature Range, used with radiator valves
$293.00
In-Stock
Free Shipping
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Free Shipping
*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.
Learn More About Caleffi 437516
Caleffi 1/2" Hard Copper Compression Fittings, 1/2" Compression Connections, 150 psi max
$155.00
In-Stock
Learn More About Caleffi NA553379
Caleffi Boiler Trim Kit, 1-1/4" Sweat Connections w/BackFlow Preventer & 4.4 gal Expansion Tank
$936.00
In-Stock
Free Shipping
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Free Shipping
*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.
Learn More About Caleffi 127349AF2G5
Caleffi FlowCal Compact Automatic Flow Balancing Valve, 1/2" Sweat Connections, Low-Lead Brass
$161.00
In-Stock
Learn More About Caleffi 127351AF1G0
Caleffi FlowCal Compact Automatic Flow Balancing Valve, 3/4" NPT Male Connections, Low-Lead Brass
$177.00
In-Stock
Learn More About Caleffi 127351AFG50
Caleffi FlowCal Compact Automatic Flow Balancing Valve, 3/4" NPT Male Connections, Low-Lead Brass
$177.00
In-Stock

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!