Amtrol designed and patented the first Extrol diaphragm expansion tank in 1954 to control system pressure and help reduce energy consumption in heating and chilled water systems. Over six decades later, Extrol is still the world's leading expansion tank brand, setting the standard for quality, reliability and innovation. All Extrol tanks are made in the USA at our ISO registered facilities by American workers dedicated to producing the highest quality expansion tanks in the world.
Product Type | Hydronic |
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Tank Capacity | 4.4GAL |
Pressure | 100PSIG |
Inlet/Outlet Connection | 1/2IN MNPT |
Part Number | 30 |
Precharge Pressure | 12PSIG |
Temperature | 240DEG F |
Diaphragm Material | Butyl/EPDM |
Material | Steel |
Application | Closed Hydronic Heating, Radiant and Chilled Water Systems |
California Residents | WARNING: Click here for Proposition 65 information. |
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Amtrol ST-5 Expansion Tank
$39.99 / ea
Amtrol ST-12 Expansion Tank
$64.13 / ea
Amtrol 60 Expansion Tank
$91.68 / ea
Flexcon HTX30 Expansion Tank
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Amtrol 15 Expansion Tank
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Amtrol SX-30V Expansion Tank
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For Guest transactions, we offer a 30-day SATISFACTION GUARANTEE. If you receive a damaged or defective item or you are dissatisfied with a product for any reason, you can return it for an exchange or refund within 30 days. F.W. Webb Account holders should refer to their local branch for their specific return policy. See our full refund/return policy.