Genuine De'Longhi OEM Generator with Mechanics Valve (5X0.5 120V). May call it boiler, element, brewing unit. Brewing Generator with mechanics valve. - Infusor for Espresso coffee maker. Genuine is available & shipped in Canada. The generator should be replaced if there is visible leakage, inconsistent cup portioning, or if the coffee simply will not brew. Replacing this part is a fairly intricate process. Limited Availability