This is the new Vaccum Breaker or antivacuum valve. ⁠ ⁠ This new device has an SMA (shape memory alloy) spring inside, which is able to change its shape according to the temperature and causes the valve to seal once the appropriate temperature has been reached.⁠ ⁠ The Vaccum Breaker avoids the vacuum effect inside the steam boiler when it cools down. Having this new Vacuum Breaker eases the compression and provides higher reliability in terms of lifespan, in comparison to the old vacuum breaker. ⁠ ⁠ Fits most La Marzocco espresso machines. ⁠ And is retrofittable. ⁠ ⁠ nuovaricambi code: B.2.029 ⁠ ⁠ #techtuesday #sparepart #technicaltuesday #lamarzocco⁠