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Old 12-19-2020, 11:39 PM
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Half-Inch Stud Half-Inch Stud is offline
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Join Date: Jul 2000
Location: BlueBell, PA or AL U.S.A.
Posts: 18,890
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Quote:
Originally Posted by bluebandit View Post
In your last photos there is a relief valve right after the feed regulator on the supply line. If you have a temp gun shoot the outlet pipes to compare to the gauge
Oh thaaaat! Yea there is a relief valve on the water feed side which goes into the return. Never a drop seen.

I never had the expansion tank drained. However the radiators seems restored because none of them show any leak or rust stains. So i figure the tank was done at that time...whenever that was.