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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!
Boiler Trim
Radiator Parts & Accessories
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Learn More About NA553662
Caleffi Boiler Trim Kit, 1" NPT Connections w/BackFlow Preventer & 7.6 gal Expansion Tank
Model: NA553662
Caleffi Boiler Trim Kit, 1" NPT Connections w/BackFlow Preventer & 7.6 gal Expansion Tank
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$305.75
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$355.75
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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.
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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
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$31.25
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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

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$9.65
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Learn More About 502710A
Caleffi Automatic Air Vent with Service Check Valve, 1/8" NPT Male
Model: 502710A
Caleffi Automatic Air Vent with Service Check Valve, 1/8" NPT Male
12% Buy This
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$9.25
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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

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$6.20
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Learn More About 681524
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
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$11.10
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Learn More About NA10262
Caleffi 1/2" Sweat Connection Fitting, chrome plated nut
Model: NA10262

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

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$5.85
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Learn More About 680505A
Caleffi 3/4" Nominal Universal PEX Fittings, ASTM Pipe Size
Model: 680505A
Caleffi 3/4" Nominal Universal PEX Fittings, ASTM Pipe Size
6% Buy This
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$4.90
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$9.90
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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)
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$23.25
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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
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$4.95
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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)
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$43.95
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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)
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$23.25
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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)
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$43.95
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Learn More About 338452
Caleffi Angled Radiator Valve Body, 1/2" Straight (Radiator) x 3/4" Conical (Pipe), 3.1 Cv
Model: 338452
Caleffi Angled Radiator Valve Body, 1/2" Straight (Radiator) x 3/4" Conical (Pipe), 3.1 Cv
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$32.25
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Learn More About Z307537
Caleffi Z-One 3-Way Diverting Sweat Low-Lead Brass Valve Body, 3/4" Connections, 20 PSI, 7.5 Cv
Model: Z307537
Caleffi Z-One 3-Way Diverting Sweat Low-Lead Brass Valve Body, 3/4" Connections, 20 PSI, 7.5 Cv
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$44.60
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Learn More About 551028AC
Caleffi Discal Air Separator with 1/2" Check Valve, 1" Sweat Connections
Model: 551028AC
Caleffi Discal Air Separator with 1/2" Check Valve, 1" Sweat Connections
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$101.95
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Learn More About 220400A
Caleffi Angled Radiator Valve Body, 1/2" NPT Connections, 40-212 F, 2.7 Cv
Model: 220400A
Caleffi Angled Radiator Valve Body, 1/2" NPT Connections, 40-212 F, 2.7 Cv
1% Buy This
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$30.70
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Learn More About 220500A
Caleffi Angled Radiator Valve Body, 3/4" NPT Connections, 40-212 F, 3.7 Cv
Model: 220500A
Caleffi Angled Radiator Valve Body, 3/4" NPT Connections, 40-212 F, 3.7 Cv
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$33.70
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Learn More About NA553362
Caleffi Boiler Trim Kit, 1" NPT Connections w/ BackFlow Preventer & 4.4 gal Expansion Tank
Model: NA553362
Caleffi Boiler Trim Kit, 1" NPT Connections w/ BackFlow Preventer & 4.4 gal Expansion Tank
1% Buy This
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$306.40
In-Stock
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.
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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
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$99.60
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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
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$9.35
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Learn More About 521519A
Caleffi MixingCal 3-Way Thermostatic Mixing Valve, Low-Lead Brass with Adaptor and Temperature Gauge, 3/4" Sweat Connections
Model: 521519A
Caleffi MixingCal 3-Way Thermostatic Mixing Valve, Low-Lead Brass with Adaptor and Temperature Gauge, 3/4" Sweat Connections
1% Buy This
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$109.45
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Learn More About 573009A
Caleffi Auto Fill Combo Automatic Boiler Fill Valve with Backflow Preventer, Pressure Indicator, 1/2" Sweat Inlet x 1/2" FNPT Outlet
Model: 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
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$94.85
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Learn More About 343452
Caleffi Straight Isolation & Balancing Valve, 1/2" Straight (Radiator) x 3/4" Conical (Pipe), 2.5 Cv
Model: 343452
Caleffi Straight Isolation & Balancing Valve, 1/2" Straight (Radiator) x 3/4" Conical (Pipe), 2.5 Cv
1% Buy This
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$22.30
Only 2 In-Stock
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