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I have had to deal many systems with high points like you have mentioned and I have tried to bleed them out but they always develop an air pocket in that high point and the only way to stop it is to make that high point your pressure relief point.
To do this I have made a remote pressure relief cap assembly and tapped off that high point, note that the cap you now have on the fill point must be replaced with a with a non vent cap to seal it and force the venting to take place at the high point.
In the case that there are two high points I bring a line from each point to the remote pressure cap.
Ken
Thanks for the input. I made that drawing for (un)clarity. But in
reality my system is just as you have indicated. there is a straight
uphill path from the upper part of the rad to the pump housing. I have
an air outlet screw on the high point of the water pump to bleed out the
last little bits of air.
Thanks,
Dave Leonard
Homepage: http://www.flyrotary.com/
Archive: http://lancaironline.net/lists/flyrotary/List.html
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