Keep a lid on it! The Rocket Espresso Boiler Pressure Gauge is compatible with Evoluzione models and works as a replacement part for this integral part of the espresso making process. Rocket Espresso makes gauges with white dials and gauges with black dials, this is for a black dial gauge. There are two gauges, one dedicated gauge for pump pressure and one for service boiler pressure control.
Best Answer:You would need to remove the old gauge and re-insert it into the hole. If your machine does not already have a gauge, this is not what you would need for your machine, as it is merely to replace a gauge that isn't working, in a Rocket machine.