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Solar Expansion Tanks

An expansion tank or expansion vessel is a small tank used to protect closed (not open to atmospheric pressure) water heating systems and domestic hot water systems from excessive pressure.

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Zilmet 21.1 Gal Solar Plus Tank 1" NPT Connection
Zilmet has also developed a series of innovative and special expansion tanks for solar Energy systems.  The SOLAR line of tanks was developed…
SKU: ZSP80
Brand: Zilmet
$294.02 each
In Stock
Requires special handling
Eligible for FREE shipping
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Zilmet 13.2 Gal Solar Plus Tank 3/4" NPT Connection
Zilmet has also developed a series of innovative and special expansion tanks for solar Energy systems.  The SOLAR line of tanks was developed…
SKU: ZSP50
Brand: Zilmet
$229.71 each
In Stock
Requires special handling
Eligible for FREE shipping
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Zilmet 9.2 Gal Solar Plus Tank 3/4" NPT Connection
Zilmet has also developed a series of innovative and special expansion tanks for solar Energy systems.  The SOLAR line of tanks was developed…
SKU: ZSP35
Brand: Zilmet
$192.25 each
In Stock
Requires special handling
Eligible for FREE shipping
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Zilmet 6.6 Gal Solar Plus Tank 3/4" NPT Connection
Zilmet has also developed a series of innovative and special expansion tanks for solar Energy systems.  The SOLAR line of tanks was developed…
SKU: ZSP24
Brand: Zilmet
$125.58 each
In Stock
Requires special handling
Eligible for FREE shipping
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Zilmet 4.8 Gal Solar Plus Tank 3/4" NPT Connection
Zilmet has also developed a series of innovative and special expansion tanks for solar Energy systems.  The SOLAR line of tanks was developed…
SKU: ZSP18
Brand: Zilmet
$110.25 each
In Stock
Requires special handling
Eligible for FREE shipping
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Zilmet 3.2 Gal Solar Plus Tank 3/4" NPT Connection
Zilmet has also developed a series of innovative and special expansion tanks for solar Energy systems.  The SOLAR line of tanks was developed…
SKU: ZSP12
Brand: Zilmet
$82.69 each
In Stock
Requires special handling
Eligible for FREE shipping
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Viessmann 21.25 gallon expansion tank w/ mounting hardware
This vessel contains air, as well as water from the central heating system. As the water heats up in the central heating system, it expands within…
SKU: 7248 245
Brand: Viessmann
$489.20 each
In Stock
Requires special handling
Eligible for FREE shipping
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Duratrac 4.8 Gallon Backstop Solar Expansion Tank
4.8 gallon Solar expansion tank
SKU: 12-S30
$37.40 each
In Stock
Requires special handling
Eligible for FREE shipping
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2 Gallon Backstop Solar Expansion Tank
2 gallon Solar expansion tank
SKU: 12-S15
$56.00 each
In Stock
Requires special handling
Eligible for FREE shipping
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