Yes in theory, but sorta no.
Most (all?) machines which alternate priority to the boilers will attend to the brew boiler until such a time as it's in equilibrium. What this means is if you pull a shot and are texturing milk simultaneously, there will be no power applied to the steam boiler until such time as the brew boiler is in equilibrium. This is not required with the Duetto as both boilers receive power simultaneously. PID behaviour is easily observed when the covers are removed from a machine to allow the SSRs to be visible.
Regardless, so long as there is sufficient steam reserve to allow for a milk texture event, it's probably academic so long as the steam boiler has sufficient capacity. I don't think that a serial strategy in a machine with 800ml steam boiler would prove all that successful.
Most (all?) machines which alternate priority to the boilers will attend to the brew boiler until such a time as it's in equilibrium. What this means is if you pull a shot and are texturing milk simultaneously, there will be no power applied to the steam boiler until such time as the brew boiler is in equilibrium. This is not required with the Duetto as both boilers receive power simultaneously. PID behaviour is easily observed when the covers are removed from a machine to allow the SSRs to be visible.
Regardless, so long as there is sufficient steam reserve to allow for a milk texture event, it's probably academic so long as the steam boiler has sufficient capacity. I don't think that a serial strategy in a machine with 800ml steam boiler would prove all that successful.

). I haven't done this modification yet.
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