Steam baseboard vent maintenance help

zigloo99

I'm unsure what kind of vent this is for a baseboard in a 1-pipe steam system. It looks like this and I haven't been able to find anything similar looking online.

Have suggestions or equivalent vent products to suggest to use in this setup?

JUGHNE

Show us the other end of the baseboard also, please.

zigloo99

Here is the other side @JUGHNE

Jamie Hall

Unless I am sadly mistaken, that is a hygroscopic steam vent, similar to the Hoffman Model 508. I have no personal experience with them at all! But they are alleged to work -- and replacements are available on ebay, of all places.

Big Ed

It's an Maid of the Mist ...

Mike Cascio

Drill a small hole in the cover and install a straight convector vent with a coupler and nipple. Those hydroscopic vents are junk.

Big Ed

But you want an very slow vent .. It's an single pipe iron base board ... They should be installed two pipe

Dave0176

That is an old Hoffman No. 500 steam vent, for both hot water and steam believe it or not. Just replace it with a straight Gorton vent.

Mike Cascio

Definitely not a case where something will work well with two different kinds of heating system.

Big Ed

I think I would try again the #500 or #508 ... Better then an HeatTimer

zigloo99

Thanks! I'm going to try the #508, for now, to see how it works out as it's cheap to test with.