Expansion & Well Tanks

Amtrol manufactures a complete range of plumbing expansion tanks from small residential to large commercial models. These products are known for their quality, reliability and extensive warranty.
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HGSC-SS Wall Mount Bracket & Service Center for Thermal Expansion Tanks Calefactio
$59.95 / each
Therm-X-Trol ST-5 Thermal Expansion Tank w/ InSight Indicator (2.0 Gal Volume) Amtrol
Therm-X-Trol ST-5 Thermal Expansion Tank w/ InSight Indicator (2.0 Gal Volume)
Part#: 140N43 Brand: Amtrol
In Stock
Pick Up and save $4.00
(5)
$58.95 / each
$223.80 box of 4 + Free Shipping
($55.95 each)
#5 Thermal Expansion Tank (2.1 Gal Volume) Calefactio
#5 Thermal Expansion Tank (2.1 Gal Volume)
Part#: HGTE-5 Brand: Calefactio
In Stock
Pick Up and save $4.00
(3)
$42.95 / each
$163.80 box of 4 + Free Shipping
($40.95 each)
#8 Thermal Expansion Tank (3.2 Gal Volume) Calefactio
#8 Thermal Expansion Tank (3.2 Gal Volume)
Part#: HGTE-8 Brand: Calefactio
In Stock
Pick Up and save $5.00
(1)
$58.95 / each
$223.80 box of 4 + Free Shipping
($55.95 each)
Therm-X-Trol ST-12 Thermal Expansion Tank w/ InSight Indicator (4.4 Gal Volume) Amtrol
Therm-X-Trol ST-12 Thermal Expansion Tank w/ InSight Indicator (4.4 Gal Volume)
Part#: 141N43 Brand: Amtrol
In Stock
Pick Up and save $6.00
(3)
$81.95 / each
$311.80 box of 4 + Free Shipping
($77.95 each)
#12 Thermal Expansion Tank (4.7 Gal Volume) Calefactio
#12 Thermal Expansion Tank (4.7 Gal Volume)
Part#: HGTE-12 Brand: Calefactio
In Stock
Pick Up and save $6.00
$68.95 / each
$263.80 box of 4 + Free Shipping
($65.95 each)
Therm-X-Trol ST-25V Thermal Expansion Tank (10.3 Gal Volume) Amtrol
Therm-X-Trol ST-25V Thermal Expansion Tank (10.3 Gal Volume)
Part#: 143N164 Brand: Amtrol
In Stock
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$260.95 / each
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#25 Thermal Expansion Tank (8.0 Gal Volume) Calefactio
#25 Thermal Expansion Tank (8.0 Gal Volume)
Part#: HGTE-25 Brand: Calefactio
In Stock
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$128.95 / each
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Therm-X-Trol ST-30V Thermal Expansion Tank (14.0 Gal Volume) Amtrol
Therm-X-Trol ST-30V Thermal Expansion Tank (14.0 Gal Volume)
Part#: 143N273 Brand: Amtrol
In Stock
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$330.95 / each
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Therm-X-Trol ST-42V Thermal Expansion Tank (20.0 Gal Volume) Amtrol
Therm-X-Trol ST-42V Thermal Expansion Tank (20.0 Gal Volume)
Part#: 144N177 Brand: Amtrol
In Stock
Pick Up and save $26.00
(1)
$395.95 / each
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Therm-X-Trol ST-60V Expansion Tank (34.0 Gal Volume) Amtrol
Therm-X-Trol ST-60V Expansion Tank (34.0 Gal Volume)
Part#: 147N130 Brand: Amtrol
In Stock
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$545.95 / each
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Therm-X-Trol ST-80V Expansion Tank (44.0 Gal Volume) Amtrol
Therm-X-Trol ST-80V Expansion Tank (44.0 Gal Volume)
Part#: 147N131 Brand: Amtrol
In Stock
Pick Up and save $100.00
(1)
$775.95 / each
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Well-X-Trol WX-101 Well Tank (2.0 Gal Volume) Amtrol
Well-X-Trol WX-101 Well Tank (2.0 Gal Volume)
Part#: 140PR1 Brand: Amtrol
In Stock
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$108.95 / each
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Well-X-Trol WX-102 Well Tank (4.4 Gal Volume) Amtrol
Well-X-Trol WX-102 Well Tank (4.4 Gal Volume)
Part#: 141PR1 Brand: Amtrol
In Stock
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$142.95 / each
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Well-X-Trol WX-103 Well Tank (7.6 Gal Volume) Amtrol
Well-X-Trol WX-103 Well Tank (7.6 Gal Volume)
Part#: 142PR1 Brand: Amtrol
In Stock
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(2)
$218.95 / each
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Well-X-Trol WX-202 Well Tank (20.0 Gal Volume) Amtrol
Well-X-Trol WX-202 Well Tank (20.0 Gal Volume)
Part#: 144S29 Brand: Amtrol
In Stock
Pick Up and save $26.00
(22)
$320.95 / each
$1,243.80 box of 4
($310.95 each)
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Well-X-Trol WX-202XL Well Tank (26.0 Gal Volume) Amtrol
Well-X-Trol WX-202XL Well Tank (26.0 Gal Volume)
Part#: 144S240 Brand: Amtrol
In Stock
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(22)
$415.95 / each
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Well-X-Trol WX-203 Well Tank (32.0 Gal Volume) Amtrol
Well-X-Trol WX-203 Well Tank (32.0 Gal Volume)
Part#: 146S30 Brand: Amtrol
In Stock
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(22)
$510.95 / each
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Well-X-Trol WX-205 Well Tank (34.0 Gal Volume) Amtrol
Well-X-Trol WX-205 Well Tank (34.0 Gal Volume)
Part#: 147S44 Brand: Amtrol
In Stock
Pick Up and save $48.00
(22)
$605.95 / each
$2,363.80 box of 4
($590.95 each)
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Well-X-Trol WX-250 Well Tank (44.0 Gal Volume) Amtrol
Well-X-Trol WX-250 Well Tank (44.0 Gal Volume)
Part#: 145S1 Brand: Amtrol
In Stock
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(22)
$695.95 / each
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Well-X-Trol WX-251 Well Tank (62.0 Gal Volume) Amtrol
Well-X-Trol WX-251 Well Tank (62.0 Gal Volume)
Part#: 145S10 Brand: Amtrol
In Stock
$1,115.95 / each
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Amtrol Plumbing Expansion Tank Series

Therm-X-Trol tanks are used for installation in domestic hot water plumbing systems in close proximity to a water heater or storage tank. These expansion tanks are factory pre-charged at 40 psig, rated up to 150 psig and are approved for domestic potable hot water use.

Well-X-Trol tanks are used in well water systems to reduce water supply pressure fluctuations and minimize cycling of the well pump, extending its' life. Factory pre-charged at 38 psig and rated up to 150 psig. Approved for potable water use. Backed by industry-leading 7 year warranty.
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