Zoning and Circulation

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Caleffi 3-Way Bypass Motorized Ball Zone Valve, 1" NPT Connections, 12 Cv Ball, 1.5 Cv Bypass
Item#: 24387
Model#: 644360A 3BY
Brand: Caleffi
$302.21
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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 map apply, see our full shipping policy for more details.
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Caleffi 3-Way Bypass Motorized Ball Zone Valve, 1" Sweat Connections, 12 Cv Ball, 1.5 Cv Bypass
Item#: 24388
Model#: 644369A 3BY
Brand: Caleffi
$295.59
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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 map apply, see our full shipping policy for more details.
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Caleffi 3-Way Bypass Motorized Ball Zone Valve, 3/4" NPT Connections, 12 Cv Ball, 1.5 Cv Bypass
Item#: 24391
Model#: 644350A 3BY
Brand: Caleffi
$259.56
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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 map apply, see our full shipping policy for more details.
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Caleffi 3-Way Bypass Motorized Ball Zone Valve, 3/4" Sweat Connections, 12 Cv Ball, 1.5 Cv Bypass
Item#: 24392
Model#: 644359A 3BY
Brand: Caleffi
$267.65
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 map apply, see our full shipping policy for more details.
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Caleffi 3-Way Diverting Motorized Ball Zone Valve, 1" NPT Connections, 4.5 Cv
Item#: 24393
Model#: 644360A
Brand: Caleffi
$302.21
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 map apply, see our full shipping policy for more details.
Factory-Direct
Caleffi 3-Way Diverting Motorized Ball Zone Valve, 1" Sweat Connections, 4.5 Cv
Item#: 24394
Model#: 644369A
Brand: Caleffi
$295.59
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 map apply, see our full shipping policy for more details.
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Caleffi 3-Way Diverting Motorized Ball Zone Valve, 3/4" NPT Connections, 4.5 Cv
Item#: 24397
Model#: 644350A
Brand: Caleffi
$259.56
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 map apply, see our full shipping policy for more details.
Factory-Direct
Caleffi 3-Way Diverting Motorized Ball Zone Valve, 3/4" Sweat Connections, 4.5 Cv
Item#: 24398
Model#: 644359A
Brand: Caleffi
$267.65
Free Shipping
Learn More
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 map apply, see our full shipping policy for more details.
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Caleffi 5/16" Nominal Universal PEX Fittings, ASTM Pipe Size
Item#: 24404
Model#: 680507
Brand: Caleffi
$7.50
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Caleffi 5/8" Nominal Universal PEX Fittings, ASTM Pipe Size
Item#: 24405
Model#: 680555A
Brand: Caleffi
$7.50
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Caleffi Anti Suction Cap for Discal 551 & DiscalDirt 546 series
Item#: 24454
Model#: 562100
Brand: Caleffi
$14.93
In-Stock
Caleffi AutoFil Automatic Boiler Fill Valve, 3/4" NPT Male Union Connections
Item#: 24455
Model#: 535051A
Brand: Caleffi
$115.44
Factory-Direct
Caleffi AutoFil Automatic Boiler Fill Valve, 3/4" Sweat Union Connections
Item#: 24456
Model#: 535059A
Brand: Caleffi
$112.50
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Caleffi AutoFill 5350 Series Valves Pressure Gauge, 2" Dual Size, 0-100 PSI, 1/8" NPT Connection
Item#: 24457
Model#: NA10273
Brand: Caleffi
$10.74
Only 4 In-Stock
Caleffi AutoFill Pressure Setting Indicator Disc Cover, Clear Plastic
Item#: 24461
Model#: NA10197
Brand: Caleffi
$1.20
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Caleffi Automatic Air Vent, 1/2" Straight Thread Connections
Item#: 24465
Model#: 502640
Brand: Caleffi
$17.21
Only 1 In-Stock
Caleffi Automatic Air Vent, 1/4" NPT Male Connections
Item#: 24466
Model#: 502620A
Brand: Caleffi
$12.06
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Caleffi Automatic Air Vent, 1/8" NPT Male Connections
Item#: 24467
Model#: 502610A
Brand: Caleffi
$11.40
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Caleffi Boilers Temperature Gauge/Dual Pressure Tridicator, 1/4" NPT Connections
Item#: 24484
Model#: NA503040
Brand: Caleffi
$28.01
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Caleffi Differential Pressure By-pass Valve, 1" NPT Inlet with 1" NPT Outlet
Item#: 24491
Model#: 519600A
Brand: Caleffi
$154.41
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Caleffi Differential Pressure By-pass Valve, 1" NPT Inlet with 1" Sweat Outlet
Item#: 24492
Model#: 519609A
Brand: Caleffi
$154.41
Factory-Direct
Caleffi Differential Pressure By-pass Valve, 1-1/4" NPT Inlet with 1-1/4" NPT Outlet
Item#: 24493
Model#: 519700A
Brand: Caleffi
$185.29
Factory-Direct
Caleffi Differential Pressure By-pass Valve, 1-1/4" NPT Inlet with 1-1/4" Sweat Outlet
Item#: 24494
Model#: 519709A
Brand: Caleffi
$185.29
Factory-Direct