Universal 5411 radiator cap size

[Gary G]

I have a Universal 5411 (M-15) in my 1983 E28+ with the factory modification for fresh waater cooling. Also there is the original Raritan 6 gallon water heater in the mix. The (vertical) heat exchanger has a radiator cap on it. The Raritan has a square metal tank as part of the circuit with a radiator cap on it also. Both of these are connected to the save collant recovery tank. Can anyone with this arrangement please tell me what size (PSI) radiator caps you are using? Thanks.

 

[mherrcat]

Here are a couple of links that may be of interest. I know I read somewhere that the two caps are not rated for the same pressure; but I can't remember which one has to be rated higher than the other and I can't find the thread on the forum where that is mentioned. Maybe someone else knows the answer...

http://www.ericsonyachts.org/infoex...mething-else-necessary&highlight=accumulation

http://www.ericsonyachts.org/infoex...ater-heater-questions.&highlight=accumulation

 

[Gary G]

Thanks, Mark. This is exactly the kind of information I'm looking for. I guess I was using the wrong search terms when I searched for this topic initially. I would certainly appreciate information on using caps with different pressure ratings if anyone knows about that.

 

[tyoung]

Sailvester is a 1983 28+ with the same setup. The cap on the heat exchanger attached to the engine is a 15 lbs cap. I think the cap on the reservoir in the lazarette is the same.
Tom Young