Boiler System Accessories

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Caleffi Dual Check Continuous Pressure Backflow Preventer with Atmospheric Vent, 1/2" NPT Female Inlet/Outlet
Item#: 24567
Model#: 573403A
Brand: Caleffi
$63.52
Factory-Direct
Caleffi FlowCal Y-Strainer with Integral Ball Valve and PT Test Ports, 1" NPT Connections
Item#: 24678
Model#: 120361A
Brand: Caleffi
$175.00
Factory-Direct
Caleffi Series 681 Universal PEX Fitting, 1/2" Nominal PEX Connection, 150 psi max - QTY:1
Item#: 24889
Model#: 681524
Brand: Caleffi
$11.77
Not For Individual Sale
Caleffi AutoFIll Combo Automatic Boiler Fill Valve with Backflow Preventer, Pressure Indicator, 1/2" Sweat Inlet x 1/2" FNPT Outlet
Item#: 25933
Model#: 573009A
Brand: Caleffi
$133.10
Factory-Direct
Honeywell, V8043E1012, Honeywell Motorized Low Voltage Normally Closed Zone Valve, 3/4" Pipe, Sweat Connection
Item#: 34554
Model#: V8043E1012
Brand: Honeywell
$99.00
In-Stock
Grundfos - 96806132 - GF 15/26 Flange - Dielectric Isolation Valve Set - Bronze - 1-1/4" NPT
Item#: 36402
Model#: 96806132
Brand: Grundfos
$103.00
In-Stock
Amtrol 44 Gallon Vertical Boiler Expansion Tank 1-1/4" NPT 34 Gall Max
Item#: 45593
Model#: SX-90V
Brand: Amtrol
$744.00
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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 map apply, see our full shipping policy for more details.
Free Lift Gate
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Free Lift Gate
*This product qualifies for Free Lift Gate Service. Items over 100lbs normally ship via semi-truck. Select this service if you need the product lowered to the ground curbside. To learn more about Lift Gate Service, read our shipping policy.
Factory-Direct
Weil-McLain - Condensate Neutralizer Kit - For Weil-McLain Ultra, AquaBalance, WM97+, ECO, and GV90+ Hot Water Boilers - MPN: 383500631
Item#: 49506
Model#: 383500631
Brand: Weil-McLain
$76.00
In-Stock
Weil-McLain - Maintenance Kit - For Weil-McLain Ultra 155, Ultra 230, Ultra 299, and Ultra 399 Hot Water Boilers - MPN: 383500620
Item#: 49959
Model#: 383500620
Brand: Weil-McLain
$75.00
In-Stock
$395.00
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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.
In-Stock
Triangle Tube - 4" - Sidewall Vent Termination Kit - PVC - For Triangle Tube Prestige Solo, Prestige Elite, KS 399, KS 500, and KS 600 Hot Water Boilers and KW 285, KW 399, and KW 500 Water heaters - MPN: PSVTERM05
Item#: 23132
Model#: PSVTERM05
Brand: Triangle Tube
$52.95
Factory-Direct
Amtrol 2 Gallon Radiant Heating Expansion Tank In-Line Mount 1/2" NPT
Item#: 23152
Model#: RX-15
Brand: Amtrol
$69.00
In-Stock
Caleffi 2-Way Thermo-electric Zone Valve, 3/4" Sweat TwisTop Connections, 24V with AUX Switch, NC
Item#: 24325
Model#: 676259A
Brand: Caleffi
$127.08
Factory-Direct
Caleffi Discal Air Separator with 1/2" FNPT Bottom Thread, 1-1/4" NPT Female Connections
Item#: 24539
Model#: 551007A
Brand: Caleffi
$221.13
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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.
In-Stock
Caleffi FlowCal Compact Automatic Flow Balancing Valve, 1/2" Sweat Connections, Low-Lead Brass
Item#: 24630
Model#: 127349AFG50
Brand: Caleffi
$70.00
Factory-Direct
Caleffi Pre-assembled Distribution Manifold Assembly, 8 Outlets, 1" Inlet Ball Valves, 2.3 Cv
Item#: 24811
Model#: 6636H5A
Brand: Caleffi
$548.61
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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 Washer Union for model 573 Backflow Preventer
Item#: 25013
Model#: R50065
Brand: Caleffi
$1.75
Factory-Direct
Caleffi Pre-assembled Fixed Point Manifold Mixing Station, 3 outlets, Thermostatic Fixed Point Mixing, Flow Gauges, 3/4" Ball Valves
Item#: 25966
Model#: 1725C1A
Brand: Caleffi
$816.67
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
$223.00
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.
In-Stock
Hydrolevel Safgard 1100 Low Water Cut-Off w/ Burner 24 VAC
Item#: 36194
Model#: 1100
Brand: Hydrolevel
$117.00
Factory-Direct
Hydrolevel Safgard 170 Hot Water Boiler Low Water Cut-Off, 120 VAC
Item#: 36202
Model#: 170SV
Brand: Hydrolevel
$130.00
Factory-Direct
Grundfos - 96806136 - GF 15/26 Flange - Dielectric Isolation Valve Set - Bronze - 1" Sweat
Item#: 36397
Model#: 96806136
Brand: Grundfos
$87.00
In-Stock