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Posted by Dave on February 12, 2009 at 14:25:06:
In Reply to: How high? Safe to Pressure Test? posted by Dave Mc on February 09, 2009 at 13:30:39:
...was alot of leaks.
at 3-1/2# everything hissed (like a brood of vipers.) Mostly leaking at the unions connecting the rads/valves. Also had a few packing nuts on the valves which went nuts and needed re-packed.
I'm sanding the mating surfaces of the unions and applying Hercules Brush-on Blue Block to both surfaces. Does anyone have experience with this product, or have a suggestion for another one that will be a good 'gasket'?