Espresso PartsSKU: V_A101

Thermal Expansion Tank - 2 Gallon Accumulator w/ 3/4" SS Connection (Special Order Item)

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This is a special order item and will ship separately.
Please allow 6 - 10 business days (typically) for the item to be processed prior to shipping.

When used in conjunction with a one way valve a thermal expansion or accumulator tank will help solve the age old problem of pressure fluctuation on an espresso machine. The principle is simple. The tank will hold two gallons of pressurized water, prior to the booster pump located in the espresso machine. What this does is create a constant pressure feed of water to the pressure pump. This is important due to pressure fluctuations caused by multiple devices drawing water from a single source. We are happy to discuss how this works, if you have any questions, please call one of our customer service representatives.

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Attention CA Residents: Prop 65 Warning

WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to

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