Water Heater Expansion Tanks

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  • 30 Hydronic Expansion Tank
    STREAM33
    30 Hydronic Expansion Tank
    SKU: S33HTX30
    DESCRIPTION: The Stream33 S33HTX30 Hydronic Expansion Tank is a high-quality expansion tank that is perfect for any hydronic heating or cooling system. It features a temperature rating of 240° F maximum, a pressure rating of 100 PSI maximum, an adjustable factory preset pressure of...
    $69.64
    $69.64
  • 60 Hydronic Expansion Tank
    STREAM33
    60 Hydronic Expansion Tank
    SKU: S33HTX60
    DESCRIPTION: The Stream33 S33HTX60 Hydronic Expansion Tank is a high-quality tank perfect for any hydronic heating or cooling system. It features a temperature rating of 240° F maximum, a pressure rating of 100 PSI maximum, an adjustable factory preset pressure of 12 PSI, and...
    $97.24
    $97.24
  • Amtrol 109 Fill-Trol Tank Only 109
    AMTROL
    Amtrol 109 Fill-Trol Tank Only 109
    SKU: 109
    Product DescriptionThe Amtrol 109 Fill-Trol Tank Only 109 is designed to provide reliable performance in plumbing systems. This tank is ideal for trade professionals who need a robust solution for water heater operations. 1/2 Nptf connection Ideal for water heater systems Manufactured in the...
    $103.66
    $103.66
  • Amtrol 109-1 Fill-Trol Tank 1/2 NPTFAmtrol 109-1 Fill-Trol Tank 1/2 NPTF
    AMTROL
    Amtrol 109-1 Fill-Trol Tank 1/2 NPTF
    SKU: 109-1
    Product DescriptionAmtrol 109-1 Fill-Trol Tank is designed for use in closed, hydronic heating systems. It combines a boiler system expansion tank with an automatic fill valve to control system pressure. Eliminates need for separate automatic fill valve Strong tank design with deep drawn steel...
    $127.05
    $127.05
  • Amtrol 15 Expansion Tank 12 Inches 1/2 NPTM Connection
    AMTROL
    Amtrol 15 Expansion Tank 12 Inches 1/2 NPTM Connection
    SKU: 15
    Product DescriptionThe Amtrol 15 Expansion Tank is designed to manage expanded water in heating systems. With MPN 15, it has a 1/2 NPTM connection and a 12-inch diameter. It is a vital part of any water heating system ensuring efficiency and safety. MPN 15...
    $65.46
    $65.46
  • Amtrol 30 Expansion Tank 1/2
    AMTROL
    Amtrol 30 Expansion Tank 1/2
    SKU: 30
    Product DescriptionThe Amtrol 30 Expansion Tank, MPN 30, is designed for use in residential or commercial water heater systems. This expansion tank helps maintain system pressure and reduce stress on the plumbing system by absorbing excess water volume generated during heating. 1/2 inch NPT...
    $67.51
    $67.51
  • Amtrol 90 Expansion Tank With 1/2 Nptm
    AMTROL
    Amtrol 90 Expansion Tank With 1/2 Nptm
    SKU: 90
    Product DescriptionThe Amtrol 90 Expansion Tank with 1/2 NPTM connection is a reliable component for plumbing systems. Designed to control thermal expansion in water heaters, this expansion tank enhances the efficiency of your system by absorbing excess water pressure. 1/2-inch NPTM connection Reduces excess...
    $232.10
    $232.10
  • Amtrol ST-12 Therm Xtrol Tank 3/4 Conn
    AMTROL
    Amtrol ST-12 Therm Xtrol Tank 3/4 Conn
    SKU: ST-12
    Product DescriptionThe Amtrol ST-12 is an expansion tank designed for hydronic systems. This model has a three-quarter inch connection and provides reliable performance in various heating applications. Expansion tank capacity is 4.4 gallons. Pressure rating is up to 150 PSIG. Height measures fifteen inches....
    $100.15
    $100.15
  • Amtrol ST-60V 34 Gallon Vert Thermal Expansion Tank 1-1/4 NPT 34 Gallons Max
    AMTROL
    Amtrol ST-60V 34 Gallon Vert Thermal Expansion Tank 1-1/4 NPT 34 Gallons Max
    SKU: ST-60V
    Product DescriptionThe Amtrol ST-60V 34 Gallon Vert Thermal Expansion Tank, MPN ST-60V, controls pressure build-up in closed water systems. Ideal for both large residential and light commercial use, this tank helps manage thermal expansion and ensures smooth water system operation. Accepts expanded water caused...
    $633.91
    $633.91
  • Amtrol SX30V Floor Mount Expansion
    AMTROL
    Amtrol SX30V Floor Mount Expansion
    SKU: SX30V
    Product DescriptionThe Amtrol SX30V is a floor mount expansion tank designed for various plumbing applications. This tank is part of the Therm-X-Trol series and is ideal for residential and commercial use. Designed for floor mounting 1-inch NPTF connection Ships via ground transportation Product HighlightsThe...
    $336.10
    $336.10
  • Amtrol SX40V Floor Mount Expansion Tank 1 NPTFAmtrol SX40V Floor Mount Expansion Tank 1 NPTF
    AMTROL
    Amtrol SX40V Floor Mount Expansion Tank 1 NPTF
    SKU: SX40V
    Product DescriptionThe Amtrol SX40V Floor Mount Expansion Tank is designed to control pressure in hydraulic systems. With Amtrol's advanced technology, this equipment ensures optimal performance in maintaining system pressure balance. 1 NPTF Connection High Quality Manufacturing Easy Installation and Maintenance Product HighlightsThe SX40V Expansion...
    $379.04
    $379.04
  • AMTROL
    Amtrol SX60V Floor Mounted Expansion Tank 1 Nptf Connection
    SKU: SX60V
    Product DescriptionThe Amtrol SX60V Floor Mounted Expansion Tank is designed to absorb excess pressure in water heating systems. Featuring a 1 NPTF connection, this model helps prevent system damage and increases efficiency. Reliable and durable construction Prevents pressure-related damage Easy to install and maintain...
    $445.20
    $445.20
  • Bell & Gossett 1BN318LF PT-12 Expansion Tank 4.4 Gallon
    BELL & GOSSETT
    Bell & Gossett 1BN318LF PT-12 Expansion Tank 4.4 Gallon
    SKU: 1BN318LF
    Product DescriptionThe Bell & Gossett PT-12 Diaphragm Expansion Tank is engineered for use in potable domestic water systems. This model, with a part number 1BN318LF, features a robust design suitable for maintaining water pressure and preventing system issues related to thermal expansion. Capacity of...
    $125.76
    $125.76
  • Bell & Gossett 1BN322LF PT-60V 34 GAL Expansion Tank
    BELL & GOSSETT
    Bell & Gossett 1BN322LF PT-60V 34 GAL Expansion Tank
    SKU: 1BN322LF
    Product DescriptionThe Bell & Gossett 1BN322LF PT-60V is a robust 34-gallon expansion tank designed to operate efficiently within potable domestic water systems. Compatible with a wide range of plumbing configurations, this unit offers versatility and reliable functionality. Constructed with a corrosion-resistant diaphragm to ensure...
    $584.64
    $584.64
  • Honeywell TK300-15 Heating Expansion TankHoneywell TK300-15 Heating Expansion Tank
    HONEYWELL
    Honeywell TK300-15 Heating Expansion Tank
    SKU: TK300-15
    Product DescriptionThe Honeywell TK300-15 is an expansion tank designed for heating systems. This unit helps manage pressure and expands with the heating fluid, preventing system failure. Ideal for use in residential and commercial HVAC systems. External NPT male connection of one half inch Durable...
    $70.50
    $70.50
  • Honeywell TK300-30 Expansion Tank 4 Gallon for Hydronic Heating Systems
    HONEYWELL
    Honeywell TK300-30 Expansion Tank 4 Gallon for Hydronic Heating Systems
    SKU: TK300-30
    Product DescriptionThe Honeywell TK300-30 Expansion Tank is designed for optimal performance in maintaining pressure stability in hydronic heating systems. Featuring a 4 gallon capacity, this model is engineered with a durable 1/2 inch NPT male connection to ensure easy installation and reliability. 4.4 gallon...
    $77.74
    $77.74
    $175.46
  • Honeywell TK300-60 Expansion Tank 7.6 Gallon Heating
    HONEYWELL
    Honeywell TK300-60 Expansion Tank 7.6 Gallon Heating
    SKU: TK300-60
    Product DescriptionThe Honeywell TK300-60 is a 7.6 gallon expansion tank designed for heating systems, ensuring a steady pressure and preventing system damage due to thermal expansion. Ideal for both residential and commercial settings, this expansion tank is an essential component for maintaining system efficiency...
    $150.11
    $150.11
  • Honeywell TK300-90 Heating Expansion Tank 14.0 Gallon
    HONEYWELL
    Honeywell TK300-90 Heating Expansion Tank 14.0 Gallon
    SKU: TK300-90
    Product DescriptionThe Honeywell TK300-90 Expansion Tank is engineered to manage hot water expansion in closed heating systems. This product features a butyl diaphragm, which efficiently separates air from system water and is designed to handle pressures up to 12 psig. Ideal for both residential...
    $233.90
    $233.90
    $258.97
  • Johnson Controls FTG13A-600R Tank Connection 150 PSIG 1/2 Inch Connection
    JOHNSON CONTROLS
    Johnson Controls FTG13A-600R Tank Connection 150 PSIG 1/2 Inch Connection
    SKU: FTG13A-600R
    Product DescriptionThe Johnson Controls FTG13A-600R is designed for closed tank applications, offering a durable solution for industrial piping systems. This product is compatible with temperatures ranging from -35 degrees Fahrenheit to 250 degrees Fahrenheit and can handle a maximum liquid pressure of 150 psig....
    $42.66
    $42.66
  • Watts 0386466 RBFF 1/2 Residential Boiler Fill FittingWatts 0386466 RBFF 1/2 Residential Boiler Fill Fitting
    WATTS
    Watts 0386466 RBFF 1/2 Residential Boiler Fill Fitting
    SKU: 386466
    Product DescriptionWatts 0386466 RBFF is designed to meet boiler manufacturers' piping standards. This product allows for easy service on expansion tanks and water pressure regulator valves in closed loop hot water heating systems. Its unique 3-way ball valve design reduces the need for multiple...
    $170.13
    $170.13

About Water Heater Expansion Tanks

An expansion tank is a safety device attached to a water heater that handles excess water as it expands due to thermal expansion.

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