Flow Control Materials

Loading Image
Keep the water flowing in your boiler system with flow control materials. With a wide selection of valves, switches, and more, eComfort has the flow control materials to optimize the performance of your hydronic system.

Learn More About Taco 555-050RP
Taco - 555-050RP - Replacement Power Unit - For Series 555-2, 556-2, 557-2, 570-2, 571-2, 572-2 & 573-2 Zone Valves
$133.29
In-Stock
Learn More About Caleffi 561402A
Caleffi 1/2" MNPT Service Check Valve, no purging system required
$11.47
Factory-Direct
Learn More About Caleffi 562100
Caleffi Anti Suction Cap for Discal 551 & DiscalDirt 546 series
$14.93
In-Stock
Learn More About Caleffi 59804A
Caleffi 1/4" MNPT Service Check Valve, no purging system required
$9.93
Factory-Direct
Learn More About Caleffi 59840A
Caleffi Tail Piece with Check Valve, 3/4" NPT Male Connection, Low-Lead Brass
$21.91
Factory-Direct
Learn More About Caleffi 59894A
Caleffi Tail Piece with Check Valve, 1" NPT Male Connection with 1" Nut, Low-Lead Brass
$35.15
Factory-Direct
Learn More About Caleffi 61215A
Caleffi 1" FNPT x 1-1/4" Male Thread Connection Bushing Fitting
$16.18
Factory-Direct
Learn More About Caleffi 644350A
Caleffi 3-Way Diverting Motorized Ball Zone Valve, 3/4" NPT Connections, 4.5 Cv
$259.56
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 644359A 3BY
Caleffi 3-Way Bypass Motorized Ball Zone Valve, 3/4" Sweat Connections, 12 Cv Ball, 1.5 Cv Bypass
$267.65
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 644360A
Caleffi 3-Way Diverting Motorized Ball Zone Valve, 1" NPT Connections, 4.5 Cv
$302.21
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 644369A 3BY
Caleffi 3-Way Bypass Motorized Ball Zone Valve, 1" Sweat Connections, 12 Cv Ball, 1.5 Cv Bypass
$295.59
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 644369A
Caleffi 3-Way Diverting Motorized Ball Zone Valve, 1" Sweat Connections, 4.5 Cv
$295.59
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 NA39588
Caleffi Replacement Ball Valve with Lever, 1-1/4" NPT Female Connections, used with DirtCal Dirt Separators
$54.34
Factory-Direct
Learn More About Caleffi 519502A
Caleffi Differential Pressure By-pass Valve, 3/4" NPT Inlet with 3/4" NPT Outlet
$98.53
In-Stock
Learn More About Caleffi Z200041
Caleffi Z-One 2-Way Straight Inverted Flare Valve Body, 75 PSI, 1 Cv
$37.79
Factory-Direct
Learn More About Caleffi Z200042
Caleffi Z-One 2-Way Straight Inverted Flare Valve Body, 50 PSI, 2.5 Cv
$37.79
Factory-Direct
Learn More About Caleffi Z200053
Caleffi Z-One 2-Way Straight SAE Flare Valve Body, 3.5 Cv
$48.38
Factory-Direct
Learn More About Caleffi Z200411
Caleffi Z-One 2-Way Straight NPT Valve Body, 1/2" Connections, 75 PSI, 1 Cv
$37.79
Factory-Direct
Learn More About Caleffi Z200412
Caleffi Z-One 2-Way Straight NPT Valve Body, 1/2" Connections, 50 PSI, 2.5 Cv
$37.79
In-Stock
Learn More About Caleffi Z207433
Caleffi Z-One 2-Way Straight Sweat Low-Lead Brass Valve Body, 1/2" Connections, 30 PSI, 3.5 Cv
$48.38
In-Stock
Learn More About Caleffi Z200535
Caleffi Z-One 2-Way Straight Sweat Valve Body, 3/4" Connections, 25 PSI, 5 Cv
$45.66
Factory-Direct
Learn More About Caleffi Z200617
Caleffi Z-One 2-Way Straight NPT Valve Body, 1" Connections, 20 PSI, 7.5 Cv
$81.62
In-Stock
Learn More About Caleffi Z300053
Caleffi Z-One 3-Way Diverting SAE Flare Valve Body, 30 PSI, 3.5 Cv
$60.44
Factory-Direct
Learn More About Caleffi Z300411
Caleffi Z-One 3-Way Diverting NPT Valve Body, 1/2" Connections, 75 PSI, 1 Cv
$50.37
Factory-Direct