La Marzocco Hot Water Switch - Momentary compact-parts/ck-cke-body-parts It's the current 2 o-ring

It's the current 2 o-ring design that replaces the older 3 o-ring version

used to join multiple plumbing lines on La Marzocco espresso machines

covering espresso cups

DIY-friendly for those comfortable disassembling the group head

La Marzocco Hot Water Switch - Momentary compact-parts/ck-cke-body-parts It's the current 2 o-ringLa Marzocco Momentary Hot Water Switch This momentary action hot water switch is pressed down to run and releases automatically back to off it replaced the earlier square E. 1. 008 switch that La Marzocco discontinued for reliability reasons. COMPATIBILITY Fits: La Marzocco machines using this momentary hot water switch Replaces: on GB5 FB80 built after serial #843, this replaces the earlier square switch (E. 1. 008 MZ_340) Works with: a wiring