📹 Lelit Mara X: How to Replace the Expansion Valve

The expansion valve, also known as the Over Pressure Valve (OPV), is a critical component of your Lelit Mara X espresso machine. It regulates the hydraulic and brew pressure to ensure optimal extraction of espresso. Over time, the OPV may need replacement due to issues like leaking, not opening, or making a screeching noise. This guide will help you understand why and how to replace the OPV on your Lelit Mara X.

Why Replace the Expansion Valve (OPV)?

Common Reasons for Replacement:

  • Leaking: If you notice water leaking from the OPV under low pressure or when the pumpp is not running, it indicates a faulty valve that needs replacement to maintain proper pressure and prevent damage to the machine.
  • Not Opening: A malfunctioning OPV that doesn't open properly can cause excessive pressure build-up, leading to poor espresso extraction and potential damage to the machine.
  • Screeching Noise: A screeching or hissing noise from the OPV indicates it is not functioning correctly, which can affect the consistency and quality of your espresso shots.

Tools and Parts Needed

  • Replacement expansion valve (OPV) compatible with Lelit Mara X
  • Flathead screwdriver
  • Phillips screwdriver
  • Wrench set
  • Teflon tape (optional)
  • Towels for cleanup

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