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Gaggia Classic OPV pressure adjustment (調節沖煮壓力)

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Published on Oct 17, 2013

http://facebook.com/HKCoffeeHome
很多低至中價的 Espresso 機,出廠時的沖煮 (出水)壓力都高達 12 bar 以上。而要得到一杯味道與質感平衡的 Espresso,就要設定大約 9 bar 上或下,視乎你的口味加或減壓力。 Gaggia Classic 要調節 OPV 也算容易的,看看影片如何更改吧!
改動很後,需要一個壓力錶去量。以下是自製的壓力錶: http://youtu.be/FLqehIG8d1Q

Many entry to mid level espresso machine was set to 12 bar or above brewing pressure. In general, we need around 9 bar. To change the OPV in Gaggia Classic is easy, let's follow the video. After that we need a pressure gauge to show the changes. Here is how to DIY a pressure gauge for portafilter: http://youtu.be/FLqehIG8d1Q

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