he Gaggia 9 Bar OPV Spring is a replacement spring kit designed for Gaggia Classic Pro, Gaggia Classic Pro Evo, Gaggia Classic, and other home Gaggia models. The kit includes three replacement springs that can be used to adjust the pressure of the Over Pressure Valve (OPV) in your Gaggia machine. The 9 bar spring is the most commonly used spring and is great for general use. The 6.5 bar spring is good for some espressos, and lower pressure extractions are being used in many coffee shops now. The 5 bar spring is very low and can cause some challenges when you steam, as the steam pressure can escape from the OPV if it exceeds 5 bar. Please note that this kit is only relevant to your Classic if it is one of the following: Model RI9480/?? - UK/EU Gaggia Classic 2019 (inc. 2019-22/30th Anniversary) - with three separate switches on the front Model RI9380/?? - US Gaggia Classic Pro (inc. 2019-22/30th Anniversary) - with three separate switches on the front Model RI9481/?? - UK/EU new Gaggia Classic Evo 2023 - with three separate switches on the front Model RI9381/?? - US new Gaggia Classic Pro Evo - with three separate switches on the front Model RI9403/??- UK/EU "New" Gaggia Classic 2015-2018 - with different switches and internals to the traditional Classic and no vent tube 1.
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