Boiler Zone Controls

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545 Products

Learn More About Caleffi Z45
Caleffi Z-One Z45 2-Way Valve and Actuator Set with 18" Leads & AUX Switch, 3/4" Sweat, Normally Closed, 7.5 Cv, 20 PSI
$142.00
Factory-Direct
Learn More About Caleffi Z50
Caleffi Z-One Z50 2-Way Valve and Actuator Set with Terminal Block & AUX Switch, Inverted Flare, Normally Closed, 3.5 Cv, 30 PSI
$138.00
Factory-Direct
Learn More About Caleffi Z50F
Caleffi Z-One Z50F 2-Way Valve and Actuator Set with Terminal Block & AUX Switch, Inverted Flare & 3/4" Sweat Connections, Normally Closed, 3.5 Cv, 30 PSI
$156.00
Factory-Direct
Learn More About Caleffi Z54
Caleffi Z-One Z54 2-Way Valve and Actuator Set with Terminal Block & AUX Switch, 1/2" Sweat, Normally Closed, 2.5 Cv, 50 PSI
$135.00
Factory-Direct
Learn More About Caleffi Z56
Caleffi Z-One Z56 2-Way Valve and Actuator Set with Terminal Block & AUX Switch, 1" Sweat, Normally Closed, 7.5 Cv, 20 PSI
$181.00
Factory-Direct
Learn More About Caleffi Z57
Caleffi Z-One Z57 2-Way Valve and Actuator Set with Terminal Block & AUX Switch, 1-1/4" Sweat, Normally Closed, 7.5 Cv, 20 PSI
$210.00
In-Stock
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Learn More About Tekmar 325-0
tekmar - Designer Series - 325 - Zone Expansion Module - Compatible with tekmarNet 4 - Six Zone Valves - For Use with tekmarNet 4 or Stand-Alone Thermostats
$404.00
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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.
Learn More About Tekmar 335
tekmar - Designer Series - 335 - Zone Manager - Compatible with tekmarNet 4 - Six Zone Valves - For Use with tekmarNet 4 or Stand-Alone Thermostats
$588.00
Factory-Direct
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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.
Learn More About Tekmar 713
tekmar - 713 - 1-1/2" - 3-Way Mixing Valve
$558.00
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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.
Learn More About Tekmar 723
tekmar - 723 - 1-1/2" - 4-Way Mixing Valve
$609.00
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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.
Learn More About Tekmar 724
tekmar - 724 - 2" - 4-Way Mixing Valve
$629.00
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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.
Learn More About Tekmar 315-0
tekmar - Performance Series - 315 - Wiring Center - Compatible with tekmarNet 4 - Six Zone Valves - For Use with tekmarNet 4 or Stand-Alone Thermostats
$269.00
Factory-Direct
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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.
Learn More About Tekmar 400-0
tekmar - Performance Series - 400 - House Control - Compatible with tekmarNet 2 - Four Zone Valves - Outdoor Temperature Reset - Boiler - DHW - Setpoint
$771.00
Factory-Direct
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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.
Learn More About Tekmar 444
tekmar - Designer Series - 444 - Mixing Expansion Module - Compatible with tekmarNet 4 - Variable Speed/Floating Action/Modulating - For Use with tekmarNet Thermostats
$484.00
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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.
Learn More About Tekmar 002
tekmar - 002 - 10K Temperature Simulator - For Use with tekmar Controls That Use a 10K Sensor Only
$511.00
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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.
Learn More About Taco 5003-C3-G
Taco - 5003-C3-G - Mixing Valve - Brass - 3/4" Sweat Connection - Point of Source - With Gauge & Check Valve
$172.00
Only 2 In-Stock
Learn More About Taco 5003-C3
Taco - 5003-C3 - Mixing Valve - Brass - 3/4" Sweat Connection - Point of Source
$121.36
In-Stock
Learn More About Taco 5004-C3
Taco - 5004-C3 - Mixing Valve - Brass - 1" Sweat Connection - Point of Source
$142.84
In-Stock
Learn More About Caleffi 644350A
Caleffi 3-Way Diverting Motorized Ball Zone Valve, 3/4" NPT Connections, 4.5 Cv
$282.00
Factory-Direct
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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.
Learn More About Caleffi 644359A 3BY
Caleffi 3-Way Bypass Motorized Ball Zone Valve, 3/4" Sweat Connections, 12 Cv Ball, 1.5 Cv Bypass
$291.00
Factory-Direct
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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.
Learn More About Caleffi 644360A
Caleffi 3-Way Diverting Motorized Ball Zone Valve, 1" NPT Connections, 4.5 Cv
$328.00
Factory-Direct
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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.
Learn More About Caleffi 644369A 3BY
Caleffi 3-Way Bypass Motorized Ball Zone Valve, 1" Sweat Connections, 12 Cv Ball, 1.5 Cv Bypass
$321.00
Factory-Direct
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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 644369A
Caleffi 3-Way Diverting Motorized Ball Zone Valve, 1" Sweat Connections, 4.5 Cv
$321.00
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 519502A
Caleffi Differential Pressure By-pass Valve, 3/4" NPT Inlet with 3/4" NPT Outlet
$102.00
In-Stock

Maximize your boilers efficiency with proper zone controls. A properly zoned building will provide radiant comfort while keeping energy bills down. Check out our wide selection or contact our experts for all your zoning needs.