Caleffi

Loading Image
Featured Categories
Filter By
  • Best Selling
  • Price: Low to High
  • Price: High to Low
  • Name: A-Z
  • Name: Z-A
  • Recommends Only
  • Closeouts Only
  • In-stock Only
  • Next Day Air Only
  • Availability
Learn More About Caleffi 940451

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

26% Buy This
$12.83
In-Stock
Learn More About Caleffi 200000
Caleffi Thermostatic Control Head with Built-in Sensor, 45-82 F Temperature Range, used with radiator valves
13% Buy This
$40.54
In-Stock
Learn More About Caleffi NA10262

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

9% Buy This
$7.65
In-Stock
Learn More About Caleffi 682540A
Caleffi Series 682 Universal PEX-AL-PEX Fittings, 1/2" PEX-AL-PEX Connections, 150 psi max
9% Buy This
$7.00
In-Stock
Learn More About Caleffi 301241
Caleffi One-pipe Straight Panel Radiators Valve, 1/2" Straight (Radiator) x 3/4" Conical (Pipe)
7% Buy This
$58.70
In-Stock
Learn More About Caleffi 681524-2
Caleffi Series 681 Universal PEX Fitting, 1/2" Nominal PEX Connection, 150 psi max - QTY:2
6% Buy This
$22.20
In-Stock
Learn More About Caleffi NA10313

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

5% Buy This
$8.17
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
$33.54
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
4% Buy This
$146.41
In-Stock
Learn More About Caleffi 680505A
Caleffi 3/4" Nominal Universal PEX Fittings, ASTM Pipe Size
4% Buy This
$6.86
In-Stock
Learn More About Caleffi 127349AFG75
Caleffi FlowCal Compact Automatic Flow Balancing Valve, 1/2" Sweat Connections, Low-Lead Brass
3% Buy This
$79.41
Factory-Direct
Learn More About Caleffi 301140
Caleffi Two-pipe Angled Panel Radiators Valve, 1/2" Straight (Radiator) x 3/4" Conical (Pipe)
2% Buy This
$33.54
In-Stock
Learn More About Caleffi 437516-2
Caleffi 1/2" Hard Copper Compression Fittings, 1/2" Compression Connections, 150 psi max
2% Buy This
$9.80
Only 4 In-Stock
Learn More About Caleffi 301341
Caleffi One-pipe Angled Panel Radiators Valve, 1/2" Straight (Radiator) x 3/4" Conical (Pipe)
1% Buy This
$63.97
Only 4 In-Stock
Learn More About Caleffi 551007A
Caleffi Discal Air Separator with 1/2" FNPT Bottom Thread, 1-1/4" NPT Female Connections
1% Buy This
$221.13
Only 1 In-Stock
Freight Icon
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
$151.41
Only 1 In-Stock
Learn More About Caleffi 551007AC
Caleffi Discal Air Separator with 1/2" Check Valve, 1-1/4" NPT Female Connections
1% Buy This
$225.35
Only 3 In-Stock
Freight Icon
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 573409A
Caleffi Dual Check Continuous Pressure Backflow Preventer with Atmospheric Vent, 1/2" Sweat Inlet/Outlet
1% Buy This
$68.16
Only 1 In-Stock
Learn More About Caleffi 551005A
Caleffi Discal Air Separator with 1/2" FNPT Bottom Thread, 3/4" NPT Female Connections
1% Buy This
$140.14
Factory-Direct
Learn More About Caleffi NA553369
Caleffi Boiler Trim Kit, 1" Sweat Connections w/BackFlow Preventer & 4.4 gal Expansion Tank
1% Buy This
$425.00
Factory-Direct
Freight Icon
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 NA546050T
Caleffi Air & Dirt Separator, 2" Threaded Connections, ASME & CRN Certified
1% Buy This
$2,705.60
Factory-Direct
Freight Icon
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.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount
2% Check Discount
Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Learn More About Caleffi 120151A
Caleffi FlowCal Y-Strainer with Integral Ball Valve, 3/4" NPT Connections
1% Buy This
$95.59
Factory-Direct
Learn More About Caleffi 120171A
Caleffi FlowCal Y-Strainer with Integral Ball Valve, 1-1/4" NPT Connections
1% Buy This
$216.18
Factory-Direct
Freight Icon
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 551008A
Caleffi Discal Air Separator with 1/2" FNPT Bottom Thread, 1-1/2" NPT Female Connections
1% Buy This
$287.32
Factory-Direct
Freight Icon
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.
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!