La Marzocco Complete Drain Cup Expansion Valve /brew-pour-over-coffee-makers Confirm your grinder is a

Confirm your grinder is a 2004-era K5 or K6 before ordering

Rancilio Rocky / MD-40 Espresso Grinder Burr Set

Replaces: OEM La Marzocco CPU fan

if you're only replacing this one panel

La Marzocco Complete Drain Cup Expansion Valve /brew-pour-over-coffee-makers Confirm your grinder is aLa Marzocco Expansion (Over Pressure) Valve 12 Bar This expansion valve bleeds off excess hydraulic pressure into the drain cup, set to release at 12 bar. Water occasionally trickling from this valve during brewing is completely normal operation. SPECIFICATIONS 1 4" M BSP thread 12 bar relief pressure COMPATIBILITY Fits: La Marzocco machines using this drain cup expansion valve design INSTALLATION DIY threads into the group hydraulic block. PRO TIPS A