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Maximum Galvanic potential . Designing for a water system
2

Maximum Galvanic potential . Designing for a water system

Maximum Galvanic potential . Designing for a water system

(OP)
I am in the process of designing a device that will see some low RE flow of municipal water.
It is a multicomponent device so I was thinking: What is a safe galvanic potential difference I would use to select materials?

I guess there are many variables to it but without getting too deep can someone give me some guidance?
Temperatures would be normal - No freezing and no boiling.
Lifetime ~ 10years
Municipal water so it will be treated.

Thanks,

Herc

RE: Maximum Galvanic potential . Designing for a water system

If the surface area of all parts with diferent metals is the same, 0.3 Volts is a reasonable maximum potential difference to not cause problems. Unfortunately that temperature range 0-100C is large to vary the potential difference considerably so normal values will be of limited value.

RE: Maximum Galvanic potential . Designing for a water system

It is also a function of the water conductivity. In low conductivity water I have seen people go 500mV without issues.
A safe range is 250-300mV.

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