water comes out of Vari-valve on radiator

Tom_53

As the heat comes up I get water comming out of the Vari-valve on the radiator.
All new vari-valves,New Utica 3 section, New dry return, water level is normal, 2 inch main about 26 ft. long, 1 inch copper dry return just under the supply.
There is a vent #883 on the return about 18 in. before it drops down to the boiler return.
When the radiator got hot and started to sqirt water i removed the #883. water came pouring out, and of course the radiator stopped leaking.
Presure trol is the additive type, set to shut down @ 1.5 psi.
Thanks in advance
Tom from long Island

Norm Harvey

Is the radiator pitched properly?

I can remember a flooded steam radiator I encountered from improper pitch and a partially closed and plugged radiator valve.

A new angle valve, proper pitch, and pressure washing some junk from inside the radiator solved the problem for me.

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Steamhead (in transit)

Water is backing up from the return

is the return above or below the waterline? If above, is it pitched back toward the boiler?

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Tom_53

reply to Norm & Steamhead

Thanks for the help,
Norm, the radiator has a good pitch, valve is all the way open.

Steamhead, Return line is overhead, has a pitch, but i forgot to say there is no main vent at the end of the 2 inch supply. Has not had one for 55 years. I did put in a new boiler, maybe it needs the main vent?
Thanks, Tom

Steamhead (in transit)

Yes you do need a main vent

measure the length and diameter of the steam main and we'll tell you what you need.

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Tom_53

main vent

Steamhead,
Main is 2in. x 26 ft. plus another 3ft. from top of boiler to the ceiling.
Thanks ,
Tom

Steamhead (in transit)

Use

two Gorton #1 or Hoffman #75 vents at the end of the main. If there's no tee to put them in, you'll have to have a 1/2" pipe-thread hole drilled and tapped. You will probably want a pro to do this unless you're pretty handy.

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Tom_53

use

#75 it is! Thank you Steamhead,
From Tom LI