What is maximum temperature difference between a liquid outlet and a liquid inlet of WhatsMiner M63 series?

For M63 series, the maximum temperature difference between inlet liquid and outlet liquid depends on the type of the coolant and rated flow at that time. For example, if your select pure water (or distilled water) + special corrosion inhibitor as a liquid medium, and the rated flow at that time is 10 L/min, the temperature difference between inlet and outlet corresponds to 10 L/min is close to 10 ℃ @ normal mode, 14 ℃ @ high performance mode. For another example, if your select different concentrations of ethylene glycol or propylene glycol as antifreeze + pure water (or distilled water) + special corrosion inhibitor as a liquid medium, the temperature difference between inlet and outlet will vary with the concentration of ethylene glycol or propylene glycol and rated flow rate at that time.

You can see the following table for details.

20 % ethylene glycol or propylene glycol solution + pure water (distilled water) + special corrosion inhibitor	Rated flow: ≥ 10.7 L/min Temperature difference between inlet liquid and outlet liquid corresponds to 10.7 L/min is close to 10 ℃ @ normal mode, and 14 ℃ @ high performance mode.
30 % ethylene glycol or propylene glycol solution + pure water (distilled water) + special corrosion inhibitor	Rated flow: ≥ 11 L/min Temperature difference between inlet liquid and outlet liquid corresponds to 11 L/min is close to 10 ℃ @ normal mode, and 14 ℃ @ high performance mode.
40 % ethylene glycol or propylene glycol solution + pure water (distilled water) + special corrosion inhibitor	Rated flow: ≥ 11.4 L/min Temperature difference between inlet liquid and outlet liquid corresponds to 11.4 L/min is close to 10 ℃ @ normal mode, and 14 ℃ @ high performance mode.
50 % ethylene glycol or propylene glycol solution + pure water (distilled water) + special corrosion inhibitor	Rated flow: ≥ 11.6 L/min Temperature difference between inlet liquid and outlet liquid corresponds to 11.6 L/min is close to 10 ℃ @ normal mode, and 14 ℃ @ high performance mode.