Thermal Expansion Tank 2 Gallon Accumulator w 3/4 SS Connection barista-basics/knockboxes this is a likely spot

this is a likely spot to check before suspecting the pump

Internal components for this older valve version are increasingly hard to source — if you're doing a full valve replacement rather than a partial repair

Fits: any portafilter with standard 3/8" threads

If you're a café or roastery looking for a grinder that delivers high performance

an excess power cord can be stored inside the power plate

Thermal Expansion Tank 2 Gallon Accumulator w 3/4 SS Connection barista-basics/knockboxes this is a likely spot2 gallon thermal expansion accumulator tank with 3 4" stainless steel connection. Helps stabilize pressure fluctuations when used with a one way valve. Fast shipping when in stock. When out of stock this becomes a special order item and typically requires 6 10 business days for processing prior to shipping. Specifications: Capacity: 2 gallons Connection: 3 4" SS Compatibility: Espresso machines with booster pump and pressure fluctuation issues