Zinc on radiator

[Menlim3]

I cannot locate any zinc "bars" on the barton raw water cooling system attached to my diesel engine. Should there be? If so, can I just buy any "bar" and attach it anywhere on the system? Ir does it have to be a specific type attached to a specific location? Thanks.

[Sailmonkey]

Typical heat exchangers will have a pencil anode screwed into the seawater jacket. They look like this



From the outside you’ll only see the brass hex head.

There are some systems that are built without anodes.

[Menlim3]

Thanks. Does anybody know if a Bowman MB30 heat exchanger uses a zinc rod and know its location?

[GordMay]

“Bowman do not fit zinc anodes as the tubes used in the construction of our heat exchangers are of copper nickel alloy and as such do not require a zinc anode.”
See Page 6 ➥ https://www.ej-bowman.com/wp-content...ance-Rev-A.pdf

[Menlim3]

Thanks. Would that be true even for older models ? Mine says MB30 and I would expect it to be at least 20 years old.

[Sailmonkey]

Originally Posted by Menlim3

Thanks. Would that be true even for older models ? Mine says MB30 and I would expect it to be at least 20 years old.

I’ve never seen a bowman with anodes