📹 Profitec Pro 500 PID: Clean or Replace the Vacuum Relief Valve Updated February 17, 2022 16:38 Learn how to clean or replace the vacuum relief valve on the Profitec Pro 500 PID espresso machine. Profitec Pro 500: How to Clean or Replace Vacuum Relief Valve Introduction/Symptoms (00:00) Remove Top Panel (00:30) Inspecting the Valve (02:20) Valve Parts: Seal & O-ring (03:10) Cleaning the Valve (04:50) Replacing the Valve (05:55) Valve Installation (07:50)