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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 Boiler Trim Kit, 1" NPT Connections w/BackFlow Preventer & 7.6 gal Expansion Tank
Model NA553662 is a Closeout
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$305.75
Was 
$355.75
SAVE $50.00
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.

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

28% Buy This
$9.65
In-Stock
Caleffi Series 681 Universal PEX Fitting, 1/2" Nominal PEX Connection, 150 psi max - QTY:1
11% Buy This
$11.10
In-Stock

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

11% Buy This
$6.20
In-Stock
Caleffi Thermostatic Control Head with Built-in Sensor, 45-82 F Temperature Range, used with radiator valves
8% Buy This
$31.25
In-Stock

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

6% Buy This
$5.85
In-Stock
Caleffi 1/2" Nominal Universal PEX Fittings, ASTM Pipe Size
$4.95
Was 
$9.95
SAVE $5.00
In-Stock
Caleffi Two-pipe Straight Panel Radiators Valve, 1/2" Straight (Radiator) x 3/4" Conical (Pipe)
4% Buy This
$23.25
In-Stock
Caleffi 1/2" Hard Copper Compression Fittings, 1/2" Compression Connections, 150 psi max
$9.35
Only 4 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 Solar Systems Automatic Air Vent, 1/2" NPT Connection
$32.40
Only 1 In-Stock
Caleffi Angled Radiator Valve Body, 1/2" NPT Connections, 40-212 F, 2.7 Cv
2% Buy This
$30.70
Only 2 In-Stock
Caleffi FlowCal Y-Strainer with Integral Ball Valve, 3/4" Sweat Connections
$66.65
Factory-Direct
Caleffi Solar Systems Safety Relief Valve, 1/2" FNPT Inlet x 3/4" FNPT Discharge, Factory set to 60 PSI
$32.25
Factory-Direct
Caleffi Solar Systems Safety Relief Valve, 1/2" FNPT Inlet x 3/4" FNPT Discharge, Factory set to 120 PSI
$32.25
Only 1 In-Stock
Caleffi Automatic Air Vent with Service Check Valve, 1/8" NPT Male
$9.25
Only 2 In-Stock
Caleffi Boiler Trim Kit, 1" NPT Connections w/ BackFlow Preventer & 4.4 gal Expansion Tank
$306.40
Only 4 In-Stock
Freight Icon
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.
Caleffi Solar Systems Safety Relief Valve, 1/2" FNPT Inlet x 3/4" FNPT Discharge, Factory set to 90 PSI
$32.25
Factory-Direct
Caleffi MixingCal 3-Way Thermostatic Mixing Valve, Low-Lead Brass 1/2" Sweat Connections, 3 Cv
$88.90
Factory-Direct
Caleffi 1" NPT Male Universal Flow Switch with NEMA 5 Enclosure, Suitable for 1" to 8" Pipe, used with heating & air conditioning systems
$124.95
Factory-Direct
Caleffi Series 682 Universal PEX-AL-PEX Fittings, 1/2" PEX-AL-PEX Connections, 150 psi max
$4.95
In-Stock
Caleffi Z-One 24V Normally Closed Valve Actuator with AUX Switch, 18" Wire
$52.20
Only 3 In-Stock
Caleffi Z-One 2-Way Straight Inverted Flare Valve Body, 30 PSI, 3.5 Cv
$23.30
Factory-Direct
Caleffi 3/4" Nominal Universal PEX Fittings, ASTM Pipe Size
$4.90
Was 
$9.90
SAVE $5.00
Only 2 In-Stock

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